764686080 has 216 divisors, whose sum is σ = 2711938320. Its totient is φ = 198819840.

The previous prime is 764686073. The next prime is 764686127. The reversal of 764686080 is 80686467.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 471511 + ... + 473129.

It is an arithmetic number, because the mean of its divisors is an integer number (12555270).

Almost surely, 2^764686080 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 764686080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1355969160).

764686080 is an abundant number, since it is smaller than the sum of its proper divisors (1947252240).

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

764686080 is a wasteful number, since it uses less digits than its factorization.

764686080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1687 (or 1670 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 45.

The square root of 764686080 is about 27652.9578888046. The cubic root of 764686080 is about 914.4523104157.

The spelling of 764686080 in words is "seven hundred sixty-four million, six hundred eighty-six thousand, eighty".