964640880 has 160 divisors (see below), whose sum is σ = 3797376000. Its totient is φ = 220485888.

The previous prime is 964640879. The next prime is 964640893. The reversal of 964640880 is 88046469.

It is a happy number.

964640880 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 31 ways as a sum of consecutive naturals, for example, 16780 + ... + 47019.

It is an arithmetic number, because the mean of its divisors is an integer number (23733600).

Almost surely, 2^964640880 is an apocalyptic number.

964640880 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

964640880 is an abundant number, since it is smaller than the sum of its proper divisors (2832735120).

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

964640880 is a wasteful number, since it uses less digits than its factorization.

964640880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63828 (or 63816 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 45.

The square root of 964640880 is about 31058.6683552273. The cubic root of 964640880 is about 988.0719131164.

The spelling of 964640880 in words is "nine hundred sixty-four million, six hundred forty thousand, eight hundred eighty".