64568064 has 72 divisors (see below), whose sum is σ = 187492032. Its totient is φ = 19563520.

The previous prime is 64568041. The next prime is 64568081. The reversal of 64568064 is 46086546.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4627 + ... + 12269.

It is an arithmetic number, because the mean of its divisors is an integer number (2604056).

Almost surely, 2^64568064 is an apocalyptic number.

64568064 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64568064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93746016).

64568064 is an abundant number, since it is smaller than the sum of its proper divisors (122923968).

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

64568064 is a wasteful number, since it uses less digits than its factorization.

64568064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7673 (or 7659 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 39.

The square root of 64568064 is about 8035.4255643370. The cubic root of 64568064 is about 401.1799823480.

The spelling of 64568064 in words is "sixty-four million, five hundred sixty-eight thousand, sixty-four".