76866057 has 16 divisors (see below), whose sum is σ = 116954880. Its totient is φ = 49858416.

The previous prime is 76866043. The next prime is 76866071. The reversal of 76866057 is 75066867.

It is an interprime number because it is at equal distance from previous prime (76866043) and next prime (76866071).

It is not a de Polignac number, because 76866057 - 2⁸ = 76865801 is a prime.

It is not an unprimeable number, because it can be changed into a prime (76866017) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37473 + ... + 39470.

It is an arithmetic number, because the mean of its divisors is an integer number (7309680).

Almost surely, 2^76866057 is an apocalyptic number.

It is an amenable number.

76866057 is a deficient number, since it is larger than the sum of its proper divisors (40088823).

76866057 is a wasteful number, since it uses less digits than its factorization.

76866057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76989 (or 76983 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 45.

The square root of 76866057 is about 8767.3289547045. The cubic root of 76866057 is about 425.1852608694.

The spelling of 76866057 in words is "seventy-six million, eight hundred sixty-six thousand, fifty-seven".