764669136 has 160 divisors (see below), whose sum is σ = 2592691200. Its totient is φ = 188144640.

The previous prime is 764669131. The next prime is 764669149. The reversal of 764669136 is 631966467.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (764669131) 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, 64780 + ... + 75668.

It is an arithmetic number, because the mean of its divisors is an integer number (16204320).

Almost surely, 2^764669136 is an apocalyptic number.

764669136 is a gapful number since it is divisible by the number (76) 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 764669136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1296345600).

764669136 is an abundant number, since it is smaller than the sum of its proper divisors (1828022064).

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

764669136 is a wasteful number, since it uses less digits than its factorization.

764669136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10937 (or 10931 counting only the distinct ones).

The product of its digits is 979776, while the sum is 48.

The square root of 764669136 is about 27652.6515184349. The cubic root of 764669136 is about 914.4455561869.

The spelling of 764669136 in words is "seven hundred sixty-four million, six hundred sixty-nine thousand, one hundred thirty-six".