72624137 has 8 divisors (see below), whose sum is σ = 76728000. Its totient is φ = 68548464.

The previous prime is 72624109. The next prime is 72624143. The reversal of 72624137 is 73142627.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 72624137 - 2¹⁰ = 72623113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72624107) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1637 + ... + 12162.

It is an arithmetic number, because the mean of its divisors is an integer number (9591000).

Almost surely, 2^72624137 is an apocalyptic number.

It is an amenable number.

72624137 is a deficient number, since it is larger than the sum of its proper divisors (4103863).

72624137 is a wasteful number, since it uses less digits than its factorization.

72624137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14095.

The product of its digits is 14112, while the sum is 32.

The square root of 72624137 is about 8521.9796409050. The cubic root of 72624137 is about 417.2153978464.

The spelling of 72624137 in words is "seventy-two million, six hundred twenty-four thousand, one hundred thirty-seven".