77868395 has 16 divisors (see below), whose sum is σ = 103864032. Its totient is φ = 55560960.

The previous prime is 77868383. The next prime is 77868407. The reversal of 77868395 is 59386877.

It is an interprime number because it is at equal distance from previous prime (77868383) and next prime (77868407).

It is not a de Polignac number, because 77868395 - 2⁴ = 77868379 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (53).

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10442 + ... + 16271.

It is an arithmetic number, because the mean of its divisors is an integer number (6491502).

Almost surely, 2^77868395 is an apocalyptic number.

77868395 is a deficient number, since it is larger than the sum of its proper divisors (25995637).

77868395 is a wasteful number, since it uses less digits than its factorization.

77868395 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26782.

The product of its digits is 2540160, while the sum is 53.

The square root of 77868395 is about 8824.3070549477. The cubic root of 77868395 is about 427.0254323621.

The spelling of 77868395 in words is "seventy-seven million, eight hundred sixty-eight thousand, three hundred ninety-five".