64231475 has 48 divisors (see below), whose sum is σ = 101112576. Its totient is φ = 39312000.

The previous prime is 64231463. The next prime is 64231477. The reversal of 64231475 is 57413246.

It is not a de Polignac number, because 64231475 - 2¹⁰ = 64230451 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64231477) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 117152 + ... + 117698.

It is an arithmetic number, because the mean of its divisors is an integer number (2106512).

Almost surely, 2^64231475 is an apocalyptic number.

64231475 is a deficient number, since it is larger than the sum of its proper divisors (36881101).

64231475 is a wasteful number, since it uses less digits than its factorization.

64231475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 636 (or 631 counting only the distinct ones).

The product of its digits is 20160, while the sum is 32.

The square root of 64231475 is about 8014.4541298831. The cubic root of 64231475 is about 400.4816593612.

The spelling of 64231475 in words is "sixty-four million, two hundred thirty-one thousand, four hundred seventy-five".