72564727 has 2 divisors, whose sum is σ = 72564728. Its totient is φ = 72564726.

The previous prime is 72564703. The next prime is 72564809. The reversal of 72564727 is 72746527.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72564727 - 2⁷ = 72564599 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 72564727.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72564127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36282363 + 36282364.

It is an arithmetic number, because the mean of its divisors is an integer number (36282364).

Almost surely, 2^72564727 is an apocalyptic number.

72564727 is a deficient number, since it is larger than the sum of its proper divisors (1).

72564727 is an equidigital number, since it uses as much as digits as its factorization.

72564727 is an evil number, because the sum of its binary digits is even.

The product of its digits is 164640, while the sum is 40.

The square root of 72564727 is about 8518.4932353087. The cubic root of 72564727 is about 417.1015994601.

The spelling of 72564727 in words is "seventy-two million, five hundred sixty-four thousand, seven hundred twenty-seven".