76390690 has 32 divisors (see below), whose sum is σ = 146394864. Its totient is φ = 28600320.

The previous prime is 76390687. The next prime is 76390711. The reversal of 76390690 is 9609367.

It can be written as a sum of positive squares in 8 ways, for example, as 68079001 + 8311689 = 8251^2 + 2883^2 .

It is a super-2 number, since 2×76390690² = 11671075037352200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32350 + ... + 34630.

Almost surely, 2^76390690 is an apocalyptic number.

76390690 is a deficient number, since it is larger than the sum of its proper divisors (70004174).

76390690 is a wasteful number, since it uses less digits than its factorization.

76390690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2502.

The product of its (nonzero) digits is 61236, while the sum is 40.

The square root of 76390690 is about 8740.1767716677. The cubic root of 76390690 is about 424.3069488813.

The spelling of 76390690 in words is "seventy-six million, three hundred ninety thousand, six hundred ninety".