624594964 has 18 divisors (see below), whose sum is σ = 1271497290. Its totient is φ = 267683472.

The previous prime is 624594947. The next prime is 624594967. The reversal of 624594964 is 469495426.

It can be written as a sum of positive squares in only one way, i.e., 624500100 + 94864 = 24990^2 + 308^2 .

It is a super-2 number, since 2×624594964² = 780237738108322592, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (624594967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1593159 + ... + 1593550.

Almost surely, 2^624594964 is an apocalyptic number.

It is an amenable number.

624594964 is an abundant number, since it is smaller than the sum of its proper divisors (646902326).

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

624594964 is a wasteful number, since it uses less digits than its factorization.

624594964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3186727 (or 3186718 counting only the distinct ones).

The product of its digits is 1866240, while the sum is 49.

The square root of 624594964 is about 24991.8979671413. The cubic root of 624594964 is about 854.8032396086.

The spelling of 624594964 in words is "six hundred twenty-four million, five hundred ninety-four thousand, nine hundred sixty-four".