64441868 has 6 divisors (see below), whose sum is σ = 112773276. Its totient is φ = 32220932.

The previous prime is 64441859. The next prime is 64441877. The reversal of 64441868 is 86814446.

It is an interprime number because it is at equal distance from previous prime (64441859) and next prime (64441877).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8055230 + ... + 8055237.

It is an arithmetic number, because the mean of its divisors is an integer number (18795546).

Almost surely, 2^64441868 is an apocalyptic number.

It is an amenable number.

64441868 is a deficient number, since it is larger than the sum of its proper divisors (48331408).

64441868 is a wasteful number, since it uses less digits than its factorization.

64441868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16110471 (or 16110469 counting only the distinct ones).

The product of its digits is 147456, while the sum is 41.

The square root of 64441868 is about 8027.5692460420. The cubic root of 64441868 is about 400.9184478531.

The spelling of 64441868 in words is "sixty-four million, four hundred forty-one thousand, eight hundred sixty-eight".