64334256 has 120 divisors (see below), whose sum is σ = 204830640. Its totient is φ = 17289216.

The previous prime is 64334251. The next prime is 64334261. The reversal of 64334256 is 65243346.

It is an interprime number because it is at equal distance from previous prime (64334251) and next prime (64334261).

It is not an unprimeable number, because it can be changed into a prime (64334251) 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, 39180 + ... + 40788.

It is an arithmetic number, because the mean of its divisors is an integer number (1706922).

Almost surely, 2^64334256 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64334256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (102415320).

64334256 is an abundant number, since it is smaller than the sum of its proper divisors (140496384).

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

64334256 is a wasteful number, since it uses less digits than its factorization.

64334256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1651 (or 1638 counting only the distinct ones).

The product of its digits is 51840, while the sum is 33.

The square root of 64334256 is about 8020.8637938816. The cubic root of 64334256 is about 400.6951578557.

The spelling of 64334256 in words is "sixty-four million, three hundred thirty-four thousand, two hundred fifty-six".