623982964 has 36 divisors (see below), whose sum is σ = 1202386500. Its totient is φ = 283127680.

The previous prime is 623982959. The next prime is 623982967. The reversal of 623982964 is 469289326.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 596336400 + 27646564 = 24420^2 + 5258^2 .

Its product of digits (1119744) is a multiple of the sum of its prime factors (2304).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (623982967) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 507102 + ... + 508330.

It is an arithmetic number, because the mean of its divisors is an integer number (33399625).

Almost surely, 2^623982964 is an apocalyptic number.

It is an amenable number.

623982964 is a deficient number, since it is larger than the sum of its proper divisors (578403536).

623982964 is a wasteful number, since it uses less digits than its factorization.

623982964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2304 (or 2291 counting only the distinct ones).

The product of its digits is 1119744, while the sum is 49.

The square root of 623982964 is about 24979.6509983626. The cubic root of 623982964 is about 854.5239596648.

The spelling of 623982964 in words is "six hundred twenty-three million, nine hundred eighty-two thousand, nine hundred sixty-four".