61456656 has 40 divisors (see below), whose sum is σ = 160947040. Its totient is φ = 20203776.

The previous prime is 61456643. The next prime is 61456657. The reversal of 61456656 is 65665416.

It is not an unprimeable number, because it can be changed into a prime (61456657) 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, 5266 + ... + 12273.

It is an arithmetic number, because the mean of its divisors is an integer number (4023676).

Almost surely, 2^61456656 is an apocalyptic number.

It is an amenable number.

61456656 is an abundant number, since it is smaller than the sum of its proper divisors (99490384).

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

61456656 is a wasteful number, since it uses less digits than its factorization.

61456656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17623 (or 17617 counting only the distinct ones).

The product of its digits is 129600, while the sum is 39.

The square root of 61456656 is about 7839.4295710849. The cubic root of 61456656 is about 394.6295859874.

The spelling of 61456656 in words is "sixty-one million, four hundred fifty-six thousand, six hundred fifty-six".