64857944 has 16 divisors (see below), whose sum is σ = 128009400. Its totient is φ = 30722112.

The previous prime is 64857917. The next prime is 64857959. The reversal of 64857944 is 44975846.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 213197 + ... + 213500.

Almost surely, 2^64857944 is an apocalyptic number.

It is an amenable number.

64857944 is a deficient number, since it is larger than the sum of its proper divisors (63151456).

64857944 is a wasteful number, since it uses less digits than its factorization.

64857944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 426722 (or 426718 counting only the distinct ones).

The product of its digits is 967680, while the sum is 47.

The square root of 64857944 is about 8053.4429904234. The cubic root of 64857944 is about 401.7794554405.

The spelling of 64857944 in words is "sixty-four million, eight hundred fifty-seven thousand, nine hundred forty-four".