64519908 has 48 divisors (see below), whose sum is σ = 155043840. Its totient is φ = 20872224.

The previous prime is 64519907. The next prime is 64519933. The reversal of 64519908 is 80991546.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 64519908.

It is not an unprimeable number, because it can be changed into a prime (64519907) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 77985 + ... + 78807.

It is an arithmetic number, because the mean of its divisors is an integer number (3230080).

Almost surely, 2^64519908 is an apocalyptic number.

It is an amenable number.

64519908 is an abundant number, since it is smaller than the sum of its proper divisors (90523932).

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

64519908 is a wasteful number, since it uses less digits than its factorization.

64519908 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1016 (or 1014 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 42.

The square root of 64519908 is about 8032.4285244252. The cubic root of 64519908 is about 401.0802218426.

The spelling of 64519908 in words is "sixty-four million, five hundred nineteen thousand, nine hundred eight".