648830976 has 112 divisors (see below), whose sum is σ = 1833061104. Its totient is φ = 203423744.

The previous prime is 648830957. The next prime is 648831031. The reversal of 648830976 is 679038846.

It is a super-2 number, since 2×648830976² = 841963270834225152, which contains 22 as substring.

It is a Smith number, since the sum of its digits (51) 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 (51).

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, 417016 + ... + 418568.

It is an arithmetic number, because the mean of its divisors is an integer number (16366617).

Almost surely, 2^648830976 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 648830976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (916530552).

648830976 is an abundant number, since it is smaller than the sum of its proper divisors (1184230128).

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

648830976 is a wasteful number, since it uses less digits than its factorization.

648830976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1599 (or 1575 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 51.

The square root of 648830976 is about 25472.1608035125. The cubic root of 648830976 is about 865.7194838040.

The spelling of 648830976 in words is "six hundred forty-eight million, eight hundred thirty thousand, nine hundred seventy-six".