64372968 has 120 divisors (see below), whose sum is σ = 198426690. Its totient is φ = 19483200.

The previous prime is 64372967. The next prime is 64372981. The reversal of 64372968 is 86927346.

It can be written as a sum of positive squares in only one way, i.e., 59629284 + 4743684 = 7722^2 + 2178^2 .

It is not an unprimeable number, because it can be changed into a prime (64372963) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 77998 + ... + 78818.

Almost surely, 2^64372968 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 64372968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99213345).

64372968 is an abundant number, since it is smaller than the sum of its proper divisors (134053722).

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

64372968 is a wasteful number, since it uses less digits than its factorization.

64372968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 861 (or 837 counting only the distinct ones).

The product of its digits is 435456, while the sum is 45.

The square root of 64372968 is about 8023.2766373845. The cubic root of 64372968 is about 400.7755121473.

The spelling of 64372968 in words is "sixty-four million, three hundred seventy-two thousand, nine hundred sixty-eight".