764489880 has 512 divisors, whose sum is σ = 3297024000. Its totient is φ = 152893440.

The previous prime is 764489863. The next prime is 764489911. The reversal of 764489880 is 88984467.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 2411482 + ... + 2411798.

It is an arithmetic number, because the mean of its divisors is an integer number (6439500).

Almost surely, 2^764489880 is an apocalyptic number.

764489880 is a gapful number since it is divisible by the number (70) 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 764489880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1648512000).

764489880 is an abundant number, since it is smaller than the sum of its proper divisors (2532534120).

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

764489880 is a wasteful number, since it uses less digits than its factorization.

764489880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384 (or 374 counting only the distinct ones).

The product of its (nonzero) digits is 3096576, while the sum is 54.

The square root of 764489880 is about 27649.4101202901. The cubic root of 764489880 is about 914.3740949254.

The spelling of 764489880 in words is "seven hundred sixty-four million, four hundred eighty-nine thousand, eight hundred eighty".