67972313 has 4 divisors (see below), whose sum is σ = 68000640. Its totient is φ = 67943988.

The previous prime is 67972297. The next prime is 67972349. The reversal of 67972313 is 31327976.

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 67972313 - 2⁴ = 67972297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67972013) 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, 10193 + ... + 15486.

It is an arithmetic number, because the mean of its divisors is an integer number (17000160).

Almost surely, 2^67972313 is an apocalyptic number.

It is an amenable number.

67972313 is a deficient number, since it is larger than the sum of its proper divisors (28327).

67972313 is a wasteful number, since it uses less digits than its factorization.

67972313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28326.

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

The square root of 67972313 is about 8244.5323093551. The cubic root of 67972313 is about 408.1101062085.

The spelling of 67972313 in words is "sixty-seven million, nine hundred seventy-two thousand, three hundred thirteen".