64331358 has 64 divisors (see below), whose sum is σ = 161118720. Its totient is φ = 16670592.

The previous prime is 64331357. The next prime is 64331363. The reversal of 64331358 is 85313346.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64331357) 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 31 ways as a sum of consecutive naturals, for example, 31216 + ... + 33212.

It is an arithmetic number, because the mean of its divisors is an integer number (2517480).

Almost surely, 2^64331358 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64331358, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80559360).

64331358 is an abundant number, since it is smaller than the sum of its proper divisors (96787362).

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

64331358 is a wasteful number, since it uses less digits than its factorization.

64331358 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2081.

The product of its digits is 25920, while the sum is 33.

The square root of 64331358 is about 8020.6831379877. The cubic root of 64331358 is about 400.6891411959.

The spelling of 64331358 in words is "sixty-four million, three hundred thirty-one thousand, three hundred fifty-eight".