764899080 has 128 divisors (see below), whose sum is σ = 2524521600. Its totient is φ = 185391360.

The previous prime is 764899049. The next prime is 764899081. The reversal of 764899080 is 80998467.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (764899081) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 157326 + ... + 162114.

It is an arithmetic number, because the mean of its divisors is an integer number (19722825).

Almost surely, 2^764899080 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 764899080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1262260800).

764899080 is an abundant number, since it is smaller than the sum of its proper divisors (1759622520).

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

764899080 is a wasteful number, since it uses less digits than its factorization.

764899080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4836 (or 4810 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 51.

The square root of 764899080 is about 27656.8089265555. The cubic root of 764899080 is about 914.5372081122.

The spelling of 764899080 in words is "seven hundred sixty-four million, eight hundred ninety-nine thousand, eighty".