72566923 has 8 divisors (see below), whose sum is σ = 85253616. Its totient is φ = 60895200.

The previous prime is 72566917. The next prime is 72566933. The reversal of 72566923 is 32966527.

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 72566923 - 2⁹ = 72566411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72566933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 253588 + ... + 253873.

It is an arithmetic number, because the mean of its divisors is an integer number (10656702).

Almost surely, 2^72566923 is an apocalyptic number.

72566923 is a deficient number, since it is larger than the sum of its proper divisors (12686693).

72566923 is a wasteful number, since it uses less digits than its factorization.

72566923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 507485.

The product of its digits is 136080, while the sum is 40.

The square root of 72566923 is about 8518.6221303683. The cubic root of 72566923 is about 417.1058069491.

The spelling of 72566923 in words is "seventy-two million, five hundred sixty-six thousand, nine hundred twenty-three".