72870693 has 32 divisors (see below), whose sum is σ = 118272000. Its totient is φ = 39817008.

The previous prime is 72870689. The next prime is 72870697. The reversal of 72870693 is 39607827.

It is an interprime number because it is at equal distance from previous prime (72870689) and next prime (72870697).

It is not a de Polignac number, because 72870693 - 2² = 72870689 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72870697) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22128 + ... + 25206.

It is an arithmetic number, because the mean of its divisors is an integer number (3696000).

Almost surely, 2^72870693 is an apocalyptic number.

It is an amenable number.

72870693 is a deficient number, since it is larger than the sum of its proper divisors (45401307).

72870693 is a wasteful number, since it uses less digits than its factorization.

72870693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3126 (or 3112 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 42.

The square root of 72870693 is about 8536.4332715719. The cubic root of 72870693 is about 417.6870076684.

The spelling of 72870693 in words is "seventy-two million, eight hundred seventy thousand, six hundred ninety-three".