648158880 has 48 divisors (see below), whose sum is σ = 2041701984. Its totient is φ = 172842240.

The previous prime is 648158879. The next prime is 648158887. The reversal of 648158880 is 88851846.

It is a tau number, because it is divible by the number of its divisors (48).

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 (648158887) 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, 674686 + ... + 675645.

It is an arithmetic number, because the mean of its divisors is an integer number (42535458).

Almost surely, 2^648158880 is an apocalyptic number.

648158880 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

648158880 is an abundant number, since it is smaller than the sum of its proper divisors (1393543104).

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

648158880 is a wasteful number, since it uses less digits than its factorization.

648158880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1350349 (or 1350341 counting only the distinct ones).

The product of its (nonzero) digits is 491520, while the sum is 48.

The square root of 648158880 is about 25458.9646293796. The cubic root of 648158880 is about 865.4204600507.

The spelling of 648158880 in words is "six hundred forty-eight million, one hundred fifty-eight thousand, eight hundred eighty".