64722873 has 16 divisors (see below), whose sum is σ = 91238400. Its totient is φ = 40698000.

The previous prime is 64722829. The next prime is 64722877. The reversal of 64722873 is 37822746.

It is not a de Polignac number, because 64722873 - 2⁸ = 64722617 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64722877) 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, 11248 + ... + 15998.

It is an arithmetic number, because the mean of its divisors is an integer number (5702400).

Almost surely, 2^64722873 is an apocalyptic number.

It is an amenable number.

64722873 is a deficient number, since it is larger than the sum of its proper divisors (26515527).

64722873 is a wasteful number, since it uses less digits than its factorization.

64722873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5012.

The product of its digits is 112896, while the sum is 39.

The square root of 64722873 is about 8045.0527033699. The cubic root of 64722873 is about 401.5003507496.

The spelling of 64722873 in words is "sixty-four million, seven hundred twenty-two thousand, eight hundred seventy-three".