64397376 has 112 divisors (see below), whose sum is σ = 192024000. Its totient is φ = 21159936.

The previous prime is 64397363. The next prime is 64397381. The reversal of 64397376 is 67379346.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 143200 + ... + 143648.

It is an arithmetic number, because the mean of its divisors is an integer number (1714500).

Almost surely, 2^64397376 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 64397376, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96012000).

64397376 is an abundant number, since it is smaller than the sum of its proper divisors (127626624).

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

64397376 is a wasteful number, since it uses less digits than its factorization.

64397376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 553 (or 537 counting only the distinct ones).

The product of its digits is 571536, while the sum is 45.

The square root of 64397376 is about 8024.7975675403. The cubic root of 64397376 is about 400.8261591446.

The spelling of 64397376 in words is "sixty-four million, three hundred ninety-seven thousand, three hundred seventy-six".