72627437 has 4 divisors (see below), whose sum is σ = 73997820. Its totient is φ = 71257056.

The previous prime is 72627433. The next prime is 72627439. The reversal of 72627437 is 73472627.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 25210441 + 47416996 = 5021^2 + 6886^2 .

It is a cyclic number.

It is not a de Polignac number, because 72627437 - 2² = 72627433 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 72627437.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72627433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 685112 + ... + 685217.

It is an arithmetic number, because the mean of its divisors is an integer number (18499455).

Almost surely, 2^72627437 is an apocalyptic number.

It is an amenable number.

72627437 is a deficient number, since it is larger than the sum of its proper divisors (1370383).

72627437 is a wasteful number, since it uses less digits than its factorization.

72627437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1370382.

The product of its digits is 98784, while the sum is 38.

The square root of 72627437 is about 8522.1732556901. The cubic root of 72627437 is about 417.2217170951.

The spelling of 72627437 in words is "seventy-two million, six hundred twenty-seven thousand, four hundred thirty-seven".