64402159 has 8 divisors (see below), whose sum is σ = 66682368. Its totient is φ = 62134680.

The previous prime is 64402157. The next prime is 64402181. The reversal of 64402159 is 95120446.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 64402159 - 2¹ = 64402157 is a prime.

It is a super-2 number, since 2×64402159² = 8295276167722562, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 64402159.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64402157) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7764 + ... + 13750.

It is an arithmetic number, because the mean of its divisors is an integer number (8335296).

Almost surely, 2^64402159 is an apocalyptic number.

64402159 is a deficient number, since it is larger than the sum of its proper divisors (2280209).

64402159 is a wasteful number, since it uses less digits than its factorization.

64402159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6365.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 64402159 is about 8025.0955757548. The cubic root of 64402159 is about 400.8360824477.

The spelling of 64402159 in words is "sixty-four million, four hundred two thousand, one hundred fifty-nine".