648853880 has 32 divisors (see below), whose sum is σ = 1460967840. Its totient is φ = 259355520.

The previous prime is 648853787. The next prime is 648853903. The reversal of 648853880 is 88358846.

It is a super-2 number, since 2×648853880² = 842022715182108800, which contains 22 as substring.

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, 59837 + ... + 69843.

It is an arithmetic number, because the mean of its divisors is an integer number (45655245).

Almost surely, 2^648853880 is an apocalyptic number.

It is an amenable number.

648853880 is an abundant number, since it is smaller than the sum of its proper divisors (812113960).

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

648853880 is a wasteful number, since it uses less digits than its factorization.

648853880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11639 (or 11635 counting only the distinct ones).

The product of its (nonzero) digits is 1474560, while the sum is 50.

The square root of 648853880 is about 25472.6103884152. The cubic root of 648853880 is about 865.7296704353.

The spelling of 648853880 in words is "six hundred forty-eight million, eight hundred fifty-three thousand, eight hundred eighty".