764868672 has 84 divisors (see below), whose sum is σ = 2197414960. Its totient is φ = 254368512.

The previous prime is 764868661. The next prime is 764868733. The reversal of 764868672 is 276868467.

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, 299979 + ... + 302517.

Almost surely, 2^764868672 is an apocalyptic number.

764868672 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 764868672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1098707480).

764868672 is an abundant number, since it is smaller than the sum of its proper divisors (1432546288).

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

764868672 is a wasteful number, since it uses less digits than its factorization.

764868672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3080 (or 3067 counting only the distinct ones).

The product of its digits is 5419008, while the sum is 54.

The square root of 764868672 is about 27656.2591830493. The cubic root of 764868672 is about 914.5250890337.

It can be divided in two parts, 76486 and 8672, that added together give a palindrome (85158).

The spelling of 764868672 in words is "seven hundred sixty-four million, eight hundred sixty-eight thousand, six hundred seventy-two".