648580 has 12 divisors (see below), whose sum is σ = 1362060. Its totient is φ = 259424.

The previous prime is 648563. The next prime is 648607. The reversal of 648580 is 85846.

It can be written as a sum of positive squares in 2 ways, for example, as 350464 + 298116 = 592^2 + 546^2 .

It is an unprimeable number.

648580 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16195 + ... + 16234.

It is an arithmetic number, because the mean of its divisors is an integer number (113505).

2⁶⁴⁸⁵⁸⁰ is an apocalyptic number.

It is an amenable number.

648580 is an abundant number, since it is smaller than the sum of its proper divisors (713480).

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

648580 is a wasteful number, since it uses less digits than its factorization.

648580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32438 (or 32436 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 31.

The square root of 648580 is about 805.3446467197. The cubic root of 648580 is about 86.5607845672.

The spelling of 648580 in words is "six hundred forty-eight thousand, five hundred eighty".