648327864 has 32 divisors (see below), whose sum is σ = 1691291520. Its totient is φ = 206713056.

The previous prime is 648327847. The next prime is 648327881. The reversal of 648327864 is 468723846.

It is an interprime number because it is at equal distance from previous prime (648327847) and next prime (648327881).

It is a congruent number.

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, 586702 + ... + 587805.

It is an arithmetic number, because the mean of its divisors is an integer number (52852860).

Almost surely, 2^648327864 is an apocalyptic number.

It is an amenable number.

648327864 is an abundant number, since it is smaller than the sum of its proper divisors (1042963656).

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

648327864 is a wasteful number, since it uses less digits than its factorization.

648327864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1174539 (or 1174535 counting only the distinct ones).

The product of its digits is 1548288, while the sum is 48.

The square root of 648327864 is about 25462.2831654979. The cubic root of 648327864 is about 865.4956625503.

The spelling of 648327864 in words is "six hundred forty-eight million, three hundred twenty-seven thousand, eight hundred sixty-four".