64402158 has 16 divisors (see below), whose sum is σ = 130988160. Its totient is φ = 21103416.

The previous prime is 64402157. The next prime is 64402181. The reversal of 64402158 is 85120446.

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 pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90610 + ... + 91317.

It is an arithmetic number, because the mean of its divisors is an integer number (8186760).

Almost surely, 2^64402158 is an apocalyptic number.

64402158 is an abundant number, since it is smaller than the sum of its proper divisors (66586002).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64402158 is a wasteful number, since it uses less digits than its factorization.

64402158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181991.

The product of its (nonzero) digits is 7680, while the sum is 30.

The square root of 64402158 is about 8025.0955134503. The cubic root of 64402158 is about 400.8360803731.

The spelling of 64402158 in words is "sixty-four million, four hundred two thousand, one hundred fifty-eight".