77614864 has 20 divisors (see below), whose sum is σ = 151870860. Its totient is φ = 38422400.

The previous prime is 77614861. The next prime is 77614883. The reversal of 77614864 is 46841677.

It can be written as a sum of positive squares in 2 ways, for example, as 59907600 + 17707264 = 7740^2 + 4208^2 .

It is a super-2 number, since 2×77614864² = 12048134227476992, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 77614864.

It is not an unprimeable number, because it can be changed into a prime (77614861) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22399 + ... + 25630.

It is an arithmetic number, because the mean of its divisors is an integer number (7593543).

Almost surely, 2^77614864 is an apocalyptic number.

It is an amenable number.

77614864 is a deficient number, since it is larger than the sum of its proper divisors (74255996).

77614864 is a wasteful number, since it uses less digits than its factorization.

77614864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48138 (or 48132 counting only the distinct ones).

The product of its digits is 225792, while the sum is 43.

The square root of 77614864 is about 8809.9298521611. The cubic root of 77614864 is about 426.5614790612.

The spelling of 77614864 in words is "seventy-seven million, six hundred fourteen thousand, eight hundred sixty-four".