624445972 has 12 divisors (see below), whose sum is σ = 1157061780. Its totient is φ = 293856896.

The previous prime is 624445967. The next prime is 624445973. The reversal of 624445972 is 279544426.

It can be written as a sum of positive squares in 2 ways, for example, as 378458116 + 245987856 = 19454^2 + 15684^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (624445973) 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 3 ways as a sum of consecutive naturals, for example, 4591447 + ... + 4591582.

It is an arithmetic number, because the mean of its divisors is an integer number (96421815).

Almost surely, 2^624445972 is an apocalyptic number.

It is an amenable number.

624445972 is a deficient number, since it is larger than the sum of its proper divisors (532615808).

624445972 is a wasteful number, since it uses less digits than its factorization.

624445972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9183050 (or 9183048 counting only the distinct ones).

The product of its digits is 483840, while the sum is 43.

The square root of 624445972 is about 24988.9169833348. The cubic root of 624445972 is about 854.7352654388.

The spelling of 624445972 in words is "six hundred twenty-four million, four hundred forty-five thousand, nine hundred seventy-two".