76812690 has 32 divisors (see below), whose sum is σ = 187479360. Its totient is φ = 20135744.

The previous prime is 76812683. The next prime is 76812691. The reversal of 76812690 is 9621867.

It is a super-2 number, since 2×76812690² = 11800378690072200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (76812691) 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, 19929 + ... + 23468.

It is an arithmetic number, because the mean of its divisors is an integer number (5858730).

Almost surely, 2^76812690 is an apocalyptic number.

76812690 is an abundant number, since it is smaller than the sum of its proper divisors (110666670).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

76812690 is a wasteful number, since it uses less digits than its factorization.

76812690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43466.

The product of its (nonzero) digits is 36288, while the sum is 39.

The square root of 76812690 is about 8764.2849109326. The cubic root of 76812690 is about 425.0868380803.

The spelling of 76812690 in words is "seventy-six million, eight hundred twelve thousand, six hundred ninety".