72566163 has 12 divisors (see below), whose sum is σ = 105084408. Its totient is φ = 48254400.

The previous prime is 72566147. The next prime is 72566231. The reversal of 72566163 is 36166527.

It is not a de Polignac number, because 72566163 - 2⁴ = 72566147 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72566113) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6445 + ... + 13662.

It is an arithmetic number, because the mean of its divisors is an integer number (8757034).

Almost surely, 2^72566163 is an apocalyptic number.

72566163 is a deficient number, since it is larger than the sum of its proper divisors (32518245).

72566163 is a wasteful number, since it uses less digits than its factorization.

72566163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20514 (or 20511 counting only the distinct ones).

The product of its digits is 45360, while the sum is 36.

The square root of 72566163 is about 8518.5775220984. The cubic root of 72566163 is about 417.1043508150.

The spelling of 72566163 in words is "seventy-two million, five hundred sixty-six thousand, one hundred sixty-three".