61366536 has 96 divisors (see below), whose sum is σ = 207230400. Its totient is φ = 15937920.

The previous prime is 61366519. The next prime is 61366541. The reversal of 61366536 is 63566316.

It is a happy number.

61366536 is a `hidden beast` number, since 61 + 3 + 66 + 536 = 666.

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 61366536.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10 + ... + 11078.

It is an arithmetic number, because the mean of its divisors is an integer number (2158650).

Almost surely, 2^61366536 is an apocalyptic number.

61366536 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 61366536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103615200).

61366536 is an abundant number, since it is smaller than the sum of its proper divisors (145863864).

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

61366536 is a wasteful number, since it uses less digits than its factorization.

61366536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11099 (or 11092 counting only the distinct ones).

The product of its digits is 58320, while the sum is 36.

The square root of 61366536 is about 7833.6795951839. The cubic root of 61366536 is about 394.4365967683.

The spelling of 61366536 in words is "sixty-one million, three hundred sixty-six thousand, five hundred thirty-six".