72757427 has 2 divisors, whose sum is σ = 72757428. Its totient is φ = 72757426.

The previous prime is 72757417. The next prime is 72757459. The reversal of 72757427 is 72475727.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72757427 - 2⁸ = 72757171 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (72757417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36378713 + 36378714.

It is an arithmetic number, because the mean of its divisors is an integer number (36378714).

Almost surely, 2^72757427 is an apocalyptic number.

72757427 is a deficient number, since it is larger than the sum of its proper divisors (1).

72757427 is an equidigital number, since it uses as much as digits as its factorization.

72757427 is an evil number, because the sum of its binary digits is even.

The product of its digits is 192080, while the sum is 41.

The square root of 72757427 is about 8529.7964219552. The cubic root of 72757427 is about 417.4704859197.

The spelling of 72757427 in words is "seventy-two million, seven hundred fifty-seven thousand, four hundred twenty-seven".