648401676 has 96 divisors (see below), whose sum is σ = 1723357440. Its totient is φ = 188096256.

The previous prime is 648401647. The next prime is 648401753. The reversal of 648401676 is 676104846.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 838426 + ... + 839198.

It is an arithmetic number, because the mean of its divisors is an integer number (17951640).

Almost surely, 2^648401676 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 648401676, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (861678720).

648401676 is an abundant number, since it is smaller than the sum of its proper divisors (1074955764).

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

648401676 is a wasteful number, since it uses less digits than its factorization.

648401676 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1095 (or 1093 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 42.

The square root of 648401676 is about 25463.7325622148. The cubic root of 648401676 is about 865.5285068076.

The spelling of 648401676 in words is "six hundred forty-eight million, four hundred one thousand, six hundred seventy-six".