61069536 has 144 divisors (see below), whose sum is σ = 194948208. Its totient is φ = 17971200.

The previous prime is 61069529. The next prime is 61069643. The reversal of 61069536 is 63596016.

61069536 is a `hidden beast` number, since 61 + 0 + 69 + 536 = 666.

61069536 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 61069536.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 116956 + ... + 117476.

It is an arithmetic number, because the mean of its divisors is an integer number (1353807).

Almost surely, 2^61069536 is an apocalyptic number.

61069536 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61069536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97474104).

61069536 is an abundant number, since it is smaller than the sum of its proper divisors (133878672).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61069536 is a wasteful number, since it uses less digits than its factorization.

61069536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 585 (or 574 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 36.

The square root of 61069536 is about 7814.6999942416. The cubic root of 61069536 is about 393.7992397983.

The spelling of 61069536 in words is "sixty-one million, sixty-nine thousand, five hundred thirty-six".