764782086 has 32 divisors (see below), whose sum is σ = 1571165568. Its totient is φ = 248086080.

The previous prime is 764782049. The next prime is 764782093. The reversal of 764782086 is 680287467.

It is a super-2 number, since 2×764782086² = 1169783278133022792, which contains 22 as substring.

It is a congruent number.

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, 21906 + ... + 44826.

It is an arithmetic number, because the mean of its divisors is an integer number (49098924).

Almost surely, 2^764782086 is an apocalyptic number.

764782086 is an abundant number, since it is smaller than the sum of its proper divisors (806383482).

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

764782086 is a wasteful number, since it uses less digits than its factorization.

764782086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23076.

The product of its (nonzero) digits is 903168, while the sum is 48.

The square root of 764782086 is about 27654.6937426542. The cubic root of 764782086 is about 914.4905785090.

The spelling of 764782086 in words is "seven hundred sixty-four million, seven hundred eighty-two thousand, eighty-six".