72975923 has 2 divisors, whose sum is σ = 72975924. Its totient is φ = 72975922.

The previous prime is 72975907. The next prime is 72975961. The reversal of 72975923 is 32957927.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (32957927) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 72975923 - 2⁴ = 72975907 is a prime.

It is not a weakly prime, because it can be changed into another prime (72972923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36487961 + 36487962.

It is an arithmetic number, because the mean of its divisors is an integer number (36487962).

Almost surely, 2^72975923 is an apocalyptic number.

72975923 is a deficient number, since it is larger than the sum of its proper divisors (1).

72975923 is an equidigital number, since it uses as much as digits as its factorization.

72975923 is an evil number, because the sum of its binary digits is even.

The product of its digits is 238140, while the sum is 44.

The square root of 72975923 is about 8542.5946292681. The cubic root of 72975923 is about 417.8879666634.

The spelling of 72975923 in words is "seventy-two million, nine hundred seventy-five thousand, nine hundred twenty-three".