77252656 has 40 divisors (see below), whose sum is σ = 162427104. Its totient is φ = 35381760.

The previous prime is 77252647. The next prime is 77252671. The reversal of 77252656 is 65625277.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27141 + ... + 29851.

Almost surely, 2^77252656 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 77252656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81213552).

77252656 is an abundant number, since it is smaller than the sum of its proper divisors (85174448).

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

77252656 is a wasteful number, since it uses less digits than its factorization.

77252656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2869 (or 2863 counting only the distinct ones).

The product of its digits is 176400, while the sum is 40.

The square root of 77252656 is about 8789.3490088857. The cubic root of 77252656 is about 425.8968943827.

The spelling of 77252656 in words is "seventy-seven million, two hundred fifty-two thousand, six hundred fifty-six".