64448260 has 12 divisors (see below), whose sum is σ = 135341388. Its totient is φ = 25779296.

The previous prime is 64448257. The next prime is 64448281. The reversal of 64448260 is 6284446.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 40653376 + 23794884 = 6376^2 + 4878^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1611187 + ... + 1611226.

It is an arithmetic number, because the mean of its divisors is an integer number (11278449).

Almost surely, 2^64448260 is an apocalyptic number.

It is an amenable number.

64448260 is an abundant number, since it is smaller than the sum of its proper divisors (70893128).

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

64448260 is a wasteful number, since it uses less digits than its factorization.

64448260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3222422 (or 3222420 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 34.

The square root of 64448260 is about 8027.9673641589. The cubic root of 64448260 is about 400.9317031382.

The spelling of 64448260 in words is "sixty-four million, four hundred forty-eight thousand, two hundred sixty".