72630437 has 4 divisors (see below), whose sum is σ = 79233216. Its totient is φ = 66027660.

The previous prime is 72630421. The next prime is 72630457. The reversal of 72630437 is 73403627.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 72630437 - 2⁴ = 72630421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72630457) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3301373 + ... + 3301394.

It is an arithmetic number, because the mean of its divisors is an integer number (19808304).

Almost surely, 2^72630437 is an apocalyptic number.

It is an amenable number.

72630437 is a deficient number, since it is larger than the sum of its proper divisors (6602779).

72630437 is a wasteful number, since it uses less digits than its factorization.

72630437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6602778.

The product of its (nonzero) digits is 21168, while the sum is 32.

The square root of 72630437 is about 8522.3492653141. The cubic root of 72630437 is about 417.2274617006.

The spelling of 72630437 in words is "seventy-two million, six hundred thirty thousand, four hundred thirty-seven".