64221159 has 24 divisors (see below), whose sum is σ = 92749440. Its totient is φ = 39416544.

The previous prime is 64221139. The next prime is 64221163. The reversal of 64221159 is 95112246.

It is not a de Polignac number, because 64221159 - 2⁵ = 64221127 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64221139) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 77622 + ... + 78444.

It is an arithmetic number, because the mean of its divisors is an integer number (3864560).

Almost surely, 2^64221159 is an apocalyptic number.

64221159 is a deficient number, since it is larger than the sum of its proper divisors (28528281).

64221159 is a wasteful number, since it uses less digits than its factorization.

64221159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 919 (or 882 counting only the distinct ones).

The product of its digits is 4320, while the sum is 30.

The square root of 64221159 is about 8013.8105168515. The cubic root of 64221159 is about 400.4602182116.

The spelling of 64221159 in words is "sixty-four million, two hundred twenty-one thousand, one hundred fifty-nine".