624425216 has 72 divisors (see below), whose sum is σ = 1298451000. Its totient is φ = 299335680.

The previous prime is 624425201. The next prime is 624425227. The reversal of 624425216 is 612524426.

It can be written as a sum of positive squares in 4 ways, for example, as 233967616 + 390457600 = 15296^2 + 19760^2 .

It is a Harshad number since it is a multiple of its sum of digits (32).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1789010 + ... + 1789358.

Almost surely, 2^624425216 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 624425216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (649225500).

624425216 is an abundant number, since it is smaller than the sum of its proper divisors (674025784).

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

624425216 is a wasteful number, since it uses less digits than its factorization.

624425216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 635 (or 621 counting only the distinct ones).

The product of its digits is 23040, while the sum is 32.

The square root of 624425216 is about 24988.5016757708. The cubic root of 624425216 is about 854.7257951336.

The spelling of 624425216 in words is "six hundred twenty-four million, four hundred twenty-five thousand, two hundred sixteen".