76975816 has 8 divisors (see below), whose sum is σ = 144329670. Its totient is φ = 38487904.

The previous prime is 76975771. The next prime is 76975817. The reversal of 76975816 is 61857967.

It can be written as a sum of positive squares in only one way, i.e., 40373316 + 36602500 = 6354^2 + 6050^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 76975816.

It is not an unprimeable number, because it can be changed into a prime (76975817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4810981 + ... + 4810996.

Almost surely, 2^76975816 is an apocalyptic number.

It is an amenable number.

76975816 is a deficient number, since it is larger than the sum of its proper divisors (67353854).

76975816 is a wasteful number, since it uses less digits than its factorization.

76975816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9621983 (or 9621979 counting only the distinct ones).

The product of its digits is 635040, while the sum is 49.

The square root of 76975816 is about 8773.5862678838. The cubic root of 76975816 is about 425.3875422391.

The spelling of 76975816 in words is "seventy-six million, nine hundred seventy-five thousand, eight hundred sixteen".