764434686 has 16 divisors (see below), whose sum is σ = 1529216784. Its totient is φ = 254753664.

The previous prime is 764434681. The next prime is 764434687. The reversal of 764434686 is 686434467.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (764434681) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20710 + ... + 44246.

It is an arithmetic number, because the mean of its divisors is an integer number (95576049).

Almost surely, 2^764434686 is an apocalyptic number.

764434686 is an abundant number, since it is smaller than the sum of its proper divisors (764782098).

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

764434686 is a wasteful number, since it uses less digits than its factorization.

764434686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28955.

The product of its digits is 2322432, while the sum is 48.

The square root of 764434686 is about 27648.4119977984. The cubic root of 764434686 is about 914.3520893242.

The spelling of 764434686 in words is "seven hundred sixty-four million, four hundred thirty-four thousand, six hundred eighty-six".