72464571 has 16 divisors (see below), whose sum is σ = 108421920. Its totient is φ = 47829600.

The previous prime is 72464551. The next prime is 72464629. The reversal of 72464571 is 17546427.

72464571 is a `hidden beast` number, since 7 + 2 + 4 + 645 + 7 + 1 = 666.

It is not a de Polignac number, because 72464571 - 2⁷ = 72464443 is a prime.

It is a super-2 number, since 2×72464571² = 10502228100428082, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (72464501) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10560 + ... + 16013.

It is an arithmetic number, because the mean of its divisors is an integer number (6776370).

Almost surely, 2^72464571 is an apocalyptic number.

72464571 is a deficient number, since it is larger than the sum of its proper divisors (35957349).

72464571 is a wasteful number, since it uses less digits than its factorization.

72464571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26683 (or 26677 counting only the distinct ones).

The product of its digits is 47040, while the sum is 36.

The square root of 72464571 is about 8512.6124662174. The cubic root of 72464571 is about 416.9096124159.

The spelling of 72464571 in words is "seventy-two million, four hundred sixty-four thousand, five hundred seventy-one".