72379797 has 32 divisors (see below), whose sum is σ = 116689920. Its totient is φ = 38983680.

The previous prime is 72379789. The next prime is 72379799. The reversal of 72379797 is 79797327.

It is not a de Polignac number, because 72379797 - 2³ = 72379789 is a prime.

It is a super-2 number, since 2×72379797² = 10477670027522418, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72379799) 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, 112597 + ... + 113237.

It is an arithmetic number, because the mean of its divisors is an integer number (3646560).

Almost surely, 2^72379797 is an apocalyptic number.

It is an amenable number.

72379797 is a deficient number, since it is larger than the sum of its proper divisors (44310123).

72379797 is a wasteful number, since it uses less digits than its factorization.

72379797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 953.

The product of its digits is 1166886, while the sum is 51.

The square root of 72379797 is about 8507.6316916049. The cubic root of 72379797 is about 416.7469725391.

The spelling of 72379797 in words is "seventy-two million, three hundred seventy-nine thousand, seven hundred ninety-seven".