77790313 has 8 divisors (see below), whose sum is σ = 82030400. Its totient is φ = 73564848.

The previous prime is 77790281. The next prime is 77790319. The reversal of 77790313 is 31309777.

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

It is a cyclic number.

It is not a de Polignac number, because 77790313 - 2⁵ = 77790281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77790319) 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, 8308 + ... + 14986.

It is an arithmetic number, because the mean of its divisors is an integer number (10253800).

Almost surely, 2^77790313 is an apocalyptic number.

It is an amenable number.

77790313 is a deficient number, since it is larger than the sum of its proper divisors (4240087).

77790313 is a wasteful number, since it uses less digits than its factorization.

77790313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7311.

The product of its (nonzero) digits is 27783, while the sum is 37.

The square root of 77790313 is about 8819.8816885489. The cubic root of 77790313 is about 426.8826523512.

The spelling of 77790313 in words is "seventy-seven million, seven hundred ninety thousand, three hundred thirteen".