64257123 has 16 divisors (see below), whose sum is σ = 100563200. Its totient is φ = 35725536.

The previous prime is 64257119. The next prime is 64257143. The reversal of 64257123 is 32175246.

It is not a de Polignac number, because 64257123 - 2² = 64257119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64257143) 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, 40573 + ... + 42126.

It is an arithmetic number, because the mean of its divisors is an integer number (6285200).

Almost surely, 2^64257123 is an apocalyptic number.

64257123 is a deficient number, since it is larger than the sum of its proper divisors (36306077).

64257123 is a wasteful number, since it uses less digits than its factorization.

64257123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82746.

The product of its digits is 10080, while the sum is 30.

The square root of 64257123 is about 8016.0540791589. The cubic root of 64257123 is about 400.5349571498.

The spelling of 64257123 in words is "sixty-four million, two hundred fifty-seven thousand, one hundred twenty-three".