61113536 has 56 divisors (see below), whose sum is σ = 135184896. Its totient is φ = 27173120.

The previous prime is 61113517. The next prime is 61113539. The reversal of 61113536 is 63531116.

It is not an unprimeable number, because it can be changed into a prime (61113539) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32165 + ... + 34011.

It is an arithmetic number, because the mean of its divisors is an integer number (2414016).

Almost surely, 2^61113536 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61113536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67592448).

61113536 is an abundant number, since it is smaller than the sum of its proper divisors (74071360).

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

61113536 is a wasteful number, since it uses less digits than its factorization.

61113536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1917 (or 1907 counting only the distinct ones).

The product of its digits is 1620, while the sum is 26.

The square root of 61113536 is about 7817.5146945816. The cubic root of 61113536 is about 393.8937932533.

The spelling of 61113536 in words is "sixty-one million, one hundred thirteen thousand, five hundred thirty-six".