72307697 has 8 divisors (see below), whose sum is σ = 90149952. Its totient is φ = 56343600.

The previous prime is 72307693. The next prime is 72307727. The reversal of 72307697 is 79670327.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 72307697 - 2² = 72307693 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72307693) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 469454 + ... + 469607.

It is an arithmetic number, because the mean of its divisors is an integer number (11268744).

Almost surely, 2^72307697 is an apocalyptic number.

72307697 is a gapful number since it is divisible by the number (77) formed by its first and last digit.

It is an amenable number.

72307697 is a deficient number, since it is larger than the sum of its proper divisors (17842255).

72307697 is a wasteful number, since it uses less digits than its factorization.

72307697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 939079.

The product of its (nonzero) digits is 111132, while the sum is 41.

The square root of 72307697 is about 8503.3932638683. The cubic root of 72307697 is about 416.6085479115.

The spelling of 72307697 in words is "seventy-two million, three hundred seven thousand, six hundred ninety-seven".