979187664 has 160 divisors (see below), whose sum is σ = 3126855424. Its totient is φ = 257126400.

The previous prime is 979187663. The next prime is 979187681. The reversal of 979187664 is 466781979.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (979187663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1628964 + ... + 1629564.

Almost surely, 2^979187664 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 979187664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1563427712).

979187664 is an abundant number, since it is smaller than the sum of its proper divisors (2147667760).

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

979187664 is a wasteful number, since it uses less digits than its factorization.

979187664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1005 (or 999 counting only the distinct ones).

The product of its digits is 4572288, while the sum is 57.

The square root of 979187664 is about 31291.9744343498. The cubic root of 979187664 is about 993.0138622007.

The spelling of 979187664 in words is "nine hundred seventy-nine million, one hundred eighty-seven thousand, six hundred sixty-four".