61711656 has 32 divisors (see below), whose sum is σ = 154472640. Its totient is φ = 20544768.

The previous prime is 61711633. The next prime is 61711667. The reversal of 61711656 is 65611716.

61711656 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 33840 + ... + 35616.

It is an arithmetic number, because the mean of its divisors is an integer number (4827270).

Almost surely, 2^61711656 is an apocalyptic number.

It is an amenable number.

61711656 is an abundant number, since it is smaller than the sum of its proper divisors (92760984).

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

61711656 is a wasteful number, since it uses less digits than its factorization.

61711656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3233 (or 3229 counting only the distinct ones).

The product of its digits is 7560, while the sum is 33.

The square root of 61711656 is about 7855.6766735909. The cubic root of 61711656 is about 395.1746405021.

The spelling of 61711656 in words is "sixty-one million, seven hundred eleven thousand, six hundred fifty-six".