64648964 has 12 divisors (see below), whose sum is σ = 115895388. Its totient is φ = 31536000.

The previous prime is 64648937. The next prime is 64649009. The reversal of 64648964 is 46984646.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 29246464 + 35402500 = 5408^2 + 5950^2 .

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, 196937 + ... + 197264.

It is an arithmetic number, because the mean of its divisors is an integer number (9657949).

Almost surely, 2^64648964 is an apocalyptic number.

It is an amenable number.

64648964 is a deficient number, since it is larger than the sum of its proper divisors (51246424).

64648964 is a wasteful number, since it uses less digits than its factorization.

64648964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394246 (or 394244 counting only the distinct ones).

The product of its digits is 995328, while the sum is 47.

The square root of 64648964 is about 8040.4579471570. The cubic root of 64648964 is about 401.3474640877.

The spelling of 64648964 in words is "sixty-four million, six hundred forty-eight thousand, nine hundred sixty-four".