77990315 has 8 divisors (see below), whose sum is σ = 100787568. Its totient is φ = 57592800.

The previous prime is 77990299. The next prime is 77990317. The reversal of 77990315 is 51309977.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 77990315 - 2⁴ = 77990299 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77990317) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 599861 + ... + 599990.

It is an arithmetic number, because the mean of its divisors is an integer number (12598446).

Almost surely, 2^77990315 is an apocalyptic number.

77990315 is a deficient number, since it is larger than the sum of its proper divisors (22797253).

77990315 is a wasteful number, since it uses less digits than its factorization.

77990315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1199869.

The product of its (nonzero) digits is 59535, while the sum is 41.

The square root of 77990315 is about 8831.2125441527. The cubic root of 77990315 is about 427.2481833783.

The spelling of 77990315 in words is "seventy-seven million, nine hundred ninety thousand, three hundred fifteen".