64863238 has 16 divisors (see below), whose sum is σ = 106908480. Its totient is φ = 29269800.

The previous prime is 64863181. The next prime is 64863241. The reversal of 64863238 is 83236846.

It is a self number, because there is not a number n which added to its sum of digits gives 64863238.

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, 7548 + ... + 13663.

It is an arithmetic number, because the mean of its divisors is an integer number (6681780).

Almost surely, 2^64863238 is an apocalyptic number.

64863238 is a deficient number, since it is larger than the sum of its proper divisors (42045242).

64863238 is a wasteful number, since it uses less digits than its factorization.

64863238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21363.

The product of its digits is 165888, while the sum is 40.

The square root of 64863238 is about 8053.7716630160. The cubic root of 64863238 is about 401.7903868311.

The spelling of 64863238 in words is "sixty-four million, eight hundred sixty-three thousand, two hundred thirty-eight".