648975 has 24 divisors (see below), whose sum is σ = 1138320. Its totient is φ = 325120.

The previous prime is 648971. The next prime is 648997. The reversal of 648975 is 579846.

It is not a de Polignac number, because 648975 - 2² = 648971 is a prime.

648975 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (648971) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1021 + ... + 1529.

It is an arithmetic number, because the mean of its divisors is an integer number (47430).

2⁶⁴⁸⁹⁷⁵ is an apocalyptic number.

648975 is a deficient number, since it is larger than the sum of its proper divisors (489345).

648975 is a wasteful number, since it uses less digits than its factorization.

648975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 539 (or 534 counting only the distinct ones).

The product of its digits is 60480, while the sum is 39.

The square root of 648975 is about 805.5898460135. The cubic root of 648975 is about 86.5783534979.

The spelling of 648975 in words is "six hundred forty-eight thousand, nine hundred seventy-five".