61556612 has 12 divisors (see below), whose sum is σ = 116010636. Its totient is φ = 28410720.

The previous prime is 61556587. The next prime is 61556617. The reversal of 61556612 is 21665516.

61556612 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 27730756 + 33825856 = 5266^2 + 5816^2 .

It is not an unprimeable number, because it can be changed into a prime (61556617) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 591839 + ... + 591942.

It is an arithmetic number, because the mean of its divisors is an integer number (9667553).

Almost surely, 2^61556612 is an apocalyptic number.

It is an amenable number.

61556612 is a deficient number, since it is larger than the sum of its proper divisors (54454024).

61556612 is a wasteful number, since it uses less digits than its factorization.

61556612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1183798 (or 1183796 counting only the distinct ones).

The product of its digits is 10800, while the sum is 32.

The square root of 61556612 is about 7845.8021897063. The cubic root of 61556612 is about 394.8434181491.

The spelling of 61556612 in words is "sixty-one million, five hundred fifty-six thousand, six hundred twelve".