648652320 has 96 divisors (see below), whose sum is σ = 2270298240. Its totient is φ = 172972800.

The previous prime is 648652307. The next prime is 648652327. The reversal of 648652320 is 23256846.

648652320 is a `hidden beast` number, since 648 + 6 + 5 + 2 + 3 + 2 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (648652327) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70756 + ... + 79395.

It is an arithmetic number, because the mean of its divisors is an integer number (23648940).

Almost surely, 2^648652320 is an apocalyptic number.

648652320 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

648652320 is an abundant number, since it is smaller than the sum of its proper divisors (1621645920).

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

648652320 is a wasteful number, since it uses less digits than its factorization.

648652320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150175 (or 150161 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

The square root of 648652320 is about 25468.6536746645. The cubic root of 648652320 is about 865.6400177161.

The spelling of 648652320 in words is "six hundred forty-eight million, six hundred fifty-two thousand, three hundred twenty".