77657016 has 32 divisors (see below), whose sum is σ = 202584960. Its totient is φ = 24760032.

The previous prime is 77656991. The next prime is 77657017. The reversal of 77657016 is 61075677.

It is a super-2 number, since 2×77657016² = 12061224268048512, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77657017) 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 7 ways as a sum of consecutive naturals, for example, 69790 + ... + 70893.

It is an arithmetic number, because the mean of its divisors is an integer number (6330780).

Almost surely, 2^77657016 is an apocalyptic number.

It is an amenable number.

77657016 is an abundant number, since it is smaller than the sum of its proper divisors (124927944).

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

77657016 is a wasteful number, since it uses less digits than its factorization.

77657016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140715 (or 140711 counting only the distinct ones).

The product of its (nonzero) digits is 61740, while the sum is 39.

The square root of 77657016 is about 8812.3218279861. The cubic root of 77657016 is about 426.6386857736.

The spelling of 77657016 in words is "seventy-seven million, six hundred fifty-seven thousand, sixteen".