648924 has 24 divisors (see below), whose sum is σ = 1603728. Its totient is φ = 203520.

The previous prime is 648917. The next prime is 648931. The reversal of 648924 is 429846.

It is an interprime number because it is at equal distance from previous prime (648917) and next prime (648931).

It is a super-2 number, since 2×648924² = 842204715552, which contains 22 as substring.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 648924.

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, 1387 + ... + 1794.

It is an arithmetic number, because the mean of its divisors is an integer number (66822).

2⁶⁴⁸⁹²⁴ is an apocalyptic number.

It is an amenable number.

648924 is an abundant number, since it is smaller than the sum of its proper divisors (954804).

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

648924 is a wasteful number, since it uses less digits than its factorization.

648924 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3205 (or 3203 counting only the distinct ones).

The product of its digits is 13824, while the sum is 33.

The square root of 648924 is about 805.5581915666. The cubic root of 648924 is about 86.5760855052.

The spelling of 648924 in words is "six hundred forty-eight thousand, nine hundred twenty-four".