64257470 has 16 divisors (see below), whose sum is σ = 115788960. Its totient is φ = 25675104.

The previous prime is 64257463. The next prime is 64257481. The reversal of 64257470 is 7475246.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 64257470.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7991 + ... + 13869.

It is an arithmetic number, because the mean of its divisors is an integer number (7236810).

Almost surely, 2^64257470 is an apocalyptic number.

64257470 is a deficient number, since it is larger than the sum of its proper divisors (51531490).

64257470 is a wasteful number, since it uses less digits than its factorization.

64257470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6979.

The product of its (nonzero) digits is 47040, while the sum is 35.

The square root of 64257470 is about 8016.0757231952. The cubic root of 64257470 is about 400.5356781354.

The spelling of 64257470 in words is "sixty-four million, two hundred fifty-seven thousand, four hundred seventy".