77904315 has 16 divisors (see below), whose sum is σ = 138496800. Its totient is φ = 41548896.

The previous prime is 77904269. The next prime is 77904341. The reversal of 77904315 is 51340977.

It is a happy number.

It is not a de Polignac number, because 77904315 - 2¹⁰ = 77903291 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 77904315.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 288400 + ... + 288669.

It is an arithmetic number, because the mean of its divisors is an integer number (8656050).

Almost surely, 2^77904315 is an apocalyptic number.

77904315 is a deficient number, since it is larger than the sum of its proper divisors (60592485).

77904315 is a wasteful number, since it uses less digits than its factorization.

77904315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 577083 (or 577077 counting only the distinct ones).

The product of its (nonzero) digits is 26460, while the sum is 36.

The square root of 77904315 is about 8826.3421075777. The cubic root of 77904315 is about 427.0910832833.

The spelling of 77904315 in words is "seventy-seven million, nine hundred four thousand, three hundred fifteen".