61656760 has 48 divisors (see below), whose sum is σ = 152497800. Its totient is φ = 22418880.

The previous prime is 61656731. The next prime is 61656761. The reversal of 61656760 is 6765616.

It is a happy number.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61656761) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1530 + ... + 11209.

Almost surely, 2^61656760 is an apocalyptic number.

It is an amenable number.

61656760 is an abundant number, since it is smaller than the sum of its proper divisors (90841040).

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

61656760 is a wasteful number, since it uses less digits than its factorization.

61656760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12772 (or 12757 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 37.

The square root of 61656760 is about 7852.1818623870. The cubic root of 61656760 is about 395.0574290265.

The spelling of 61656760 in words is "sixty-one million, six hundred fifty-six thousand, seven hundred sixty".