77930875 has 48 divisors (see below), whose sum is σ = 112690656. Its totient is φ = 53352000.

The previous prime is 77930863. The next prime is 77930887. The reversal of 77930875 is 57803977.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (77930863) and next prime (77930887).

It is not a de Polignac number, because 77930875 - 2¹⁹ = 77406587 is a prime.

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 47 ways as a sum of consecutive naturals, for example, 496297 + ... + 496453.

It is an arithmetic number, because the mean of its divisors is an integer number (2347722).

Almost surely, 2^77930875 is an apocalyptic number.

77930875 is a deficient number, since it is larger than the sum of its proper divisors (34759781).

77930875 is a wasteful number, since it uses less digits than its factorization.

77930875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221 (or 192 counting only the distinct ones).

The product of its (nonzero) digits is 370440, while the sum is 46.

The square root of 77930875 is about 8827.8465664056. The cubic root of 77930875 is about 427.1396139724.

The spelling of 77930875 in words is "seventy-seven million, nine hundred thirty thousand, eight hundred seventy-five".