648458380 has 48 divisors (see below), whose sum is σ = 1398811680. Its totient is φ = 252416000.

The previous prime is 648458359. The next prime is 648458381. The reversal of 648458380 is 83854846.

It is a self number, because there is not a number n which added to its sum of digits gives 648458380.

It is not an unprimeable number, because it can be changed into a prime (648458381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 116460 + ... + 121900.

It is an arithmetic number, because the mean of its divisors is an integer number (29141910).

Almost surely, 2^648458380 is an apocalyptic number.

It is an amenable number.

648458380 is an abundant number, since it is smaller than the sum of its proper divisors (750353300).

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

648458380 is a wasteful number, since it uses less digits than its factorization.

648458380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5610 (or 5608 counting only the distinct ones).

The product of its (nonzero) digits is 737280, while the sum is 46.

The square root of 648458380 is about 25464.8459645842. The cubic root of 648458380 is about 865.5537367948.

The spelling of 648458380 in words is "six hundred forty-eight million, four hundred fifty-eight thousand, three hundred eighty".