64849960 has 32 divisors (see below), whose sum is σ = 166757760. Its totient is φ = 22234176.

The previous prime is 64849871. The next prime is 64849973. The reversal of 64849960 is 6994846.

It is a self number, because there is not a number n which added to its sum of digits gives 64849960.

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, 115524 + ... + 116083.

It is an arithmetic number, because the mean of its divisors is an integer number (5211180).

Almost surely, 2^64849960 is an apocalyptic number.

It is an amenable number.

64849960 is an abundant number, since it is smaller than the sum of its proper divisors (101907800).

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

64849960 is a wasteful number, since it uses less digits than its factorization.

64849960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231625 (or 231621 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 46.

The square root of 64849960 is about 8052.9472865529. The cubic root of 64849960 is about 401.7629684403.

The spelling of 64849960 in words is "sixty-four million, eight hundred forty-nine thousand, nine hundred sixty".