648970752 has 80 divisors (see below), whose sum is σ = 1744665120. Its totient is φ = 214351872.

The previous prime is 648970741. The next prime is 648970759. The reversal of 648970752 is 257079846.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (648970759) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 171699 + ... + 175437.

It is an arithmetic number, because the mean of its divisors is an integer number (21808314).

Almost surely, 2^648970752 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 648970752, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (872332560).

648970752 is an abundant number, since it is smaller than the sum of its proper divisors (1095694368).

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

648970752 is a wasteful number, since it uses less digits than its factorization.

648970752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3873 (or 3857 counting only the distinct ones).

The product of its (nonzero) digits is 846720, while the sum is 48.

The square root of 648970752 is about 25474.9043570334. The cubic root of 648970752 is about 865.7816459195.

The spelling of 648970752 in words is "six hundred forty-eight million, nine hundred seventy thousand, seven hundred fifty-two".