76387986 has 24 divisors (see below), whose sum is σ = 165729564. Its totient is φ = 25428480.

The previous prime is 76387957. The next prime is 76388009. The reversal of 76387986 is 68978367.

76387986 = 1669² + 1670² + ... + 1695².

It can be written as a sum of positive squares in 2 ways, for example, as 63920025 + 12467961 = 7995^2 + 3531^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13450 + ... + 18266.

Almost surely, 2^76387986 is an apocalyptic number.

76387986 is an abundant number, since it is smaller than the sum of its proper divisors (89341578).

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

76387986 is a wasteful number, since it uses less digits than its factorization.

76387986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5706 (or 5703 counting only the distinct ones).

The product of its digits is 3048192, while the sum is 54.

The square root of 76387986 is about 8740.0220823520. The cubic root of 76387986 is about 424.3019424269.

The spelling of 76387986 in words is "seventy-six million, three hundred eighty-seven thousand, nine hundred eighty-six".