77115648 has 36 divisors (see below), whose sum is σ = 205242128. Its totient is φ = 25704960.

The previous prime is 77115601. The next prime is 77115653. The reversal of 77115648 is 84651177.

It is a super-3 number, since 3×77115648³ (a number of 25 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49438 + ... + 50973.

Almost surely, 2^77115648 is an apocalyptic number.

It is an amenable number.

77115648 is an abundant number, since it is smaller than the sum of its proper divisors (128126480).

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

77115648 is a wasteful number, since it uses less digits than its factorization.

77115648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100430 (or 100416 counting only the distinct ones).

The product of its digits is 47040, while the sum is 39.

The square root of 77115648 is about 8781.5515713341. The cubic root of 77115648 is about 425.6449685841.

The spelling of 77115648 in words is "seventy-seven million, one hundred fifteen thousand, six hundred forty-eight".