72793631 has 4 divisors (see below), whose sum is σ = 72877512. Its totient is φ = 72709752.

The previous prime is 72793619. The next prime is 72793639. The reversal of 72793631 is 13639727.

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

It is a cyclic number.

It is not a de Polignac number, because 72793631 - 2¹⁴ = 72777247 is a prime.

It is a super-2 number, since 2×72793631² = 10597825428328322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72793639) 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, 40625 + ... + 42378.

It is an arithmetic number, because the mean of its divisors is an integer number (18219378).

Almost surely, 2^72793631 is an apocalyptic number.

72793631 is a deficient number, since it is larger than the sum of its proper divisors (83881).

72793631 is an equidigital number, since it uses as much as digits as its factorization.

72793631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83880.

The product of its digits is 47628, while the sum is 38.

The square root of 72793631 is about 8531.9183657604. The cubic root of 72793631 is about 417.5397186925.

The spelling of 72793631 in words is "seventy-two million, seven hundred ninety-three thousand, six hundred thirty-one".