64311258 has 32 divisors (see below), whose sum is σ = 141492672. Its totient is φ = 19485840.

The previous prime is 64311253. The next prime is 64311259. The reversal of 64311258 is 85211346.

It is not an unprimeable number, because it can be changed into a prime (64311253) 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 15 ways as a sum of consecutive naturals, for example, 3960 + ... + 12012.

It is an arithmetic number, because the mean of its divisors is an integer number (4421646).

Almost surely, 2^64311258 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64311258, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70746336).

64311258 is an abundant number, since it is smaller than the sum of its proper divisors (77181414).

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

64311258 is a wasteful number, since it uses less digits than its factorization.

64311258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8091 (or 8069 counting only the distinct ones).

The product of its digits is 5760, while the sum is 30.

The square root of 64311258 is about 8019.4300296218. The cubic root of 64311258 is about 400.6474057658.

The spelling of 64311258 in words is "sixty-four million, three hundred eleven thousand, two hundred fifty-eight".