64000648 has 16 divisors (see below), whose sum is σ = 127060380. Its totient is φ = 30117888.

The previous prime is 64000637. The next prime is 64000649. The reversal of 64000648 is 84600046.

It can be written as a sum of positive squares in 2 ways, for example, as 61434244 + 2566404 = 7838^2 + 1602^2 .

It is not an unprimeable number, because it can be changed into a prime (64000649) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 235161 + ... + 235432.

Almost surely, 2^64000648 is an apocalyptic number.

64000648 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

64000648 is a deficient number, since it is larger than the sum of its proper divisors (63059732).

64000648 is a wasteful number, since it uses less digits than its factorization.

64000648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 470616 (or 470612 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 64000648 is about 8000.0404998975. The cubic root of 64000648 is about 400.0013499954.

The spelling of 64000648 in words is "sixty-four million, six hundred forty-eight", and thus it is an aban number.