72685624 has 32 divisors (see below), whose sum is σ = 149785200. Its totient is φ = 32792320.

The previous prime is 72685619. The next prime is 72685633. The reversal of 72685624 is 42658627.

It is a congruent number.

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, 9042 + ... + 15070.

Almost surely, 2^72685624 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 72685624, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74892600).

72685624 is an abundant number, since it is smaller than the sum of its proper divisors (77099576).

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

72685624 is a wasteful number, since it uses less digits than its factorization.

72685624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6183 (or 6179 counting only the distinct ones).

The product of its digits is 161280, while the sum is 40.

The square root of 72685624 is about 8525.5864314427. The cubic root of 72685624 is about 417.3331093395. Note that the first 3 decimals are identical.

The spelling of 72685624 in words is "seventy-two million, six hundred eighty-five thousand, six hundred twenty-four".