648856376 has 32 divisors (see below), whose sum is σ = 1391372640. Its totient is φ = 277888128.

The previous prime is 648856349. The next prime is 648856387. The reversal of 648856376 is 673658846.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors.

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, 102026 + ... + 108198.

It is an arithmetic number, because the mean of its divisors is an integer number (43480395).

Almost surely, 2^648856376 is an apocalyptic number.

It is an amenable number.

648856376 is an abundant number, since it is smaller than the sum of its proper divisors (742516264).

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

648856376 is a wasteful number, since it uses less digits than its factorization.

648856376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8063 (or 8059 counting only the distinct ones).

The product of its digits is 5806080, while the sum is 53.

The square root of 648856376 is about 25472.6593821690. The cubic root of 648856376 is about 865.7307805252.

The spelling of 648856376 in words is "six hundred forty-eight million, eight hundred fifty-six thousand, three hundred seventy-six".