648744 has 16 divisors (see below), whose sum is σ = 1621920. Its totient is φ = 216240.

The previous prime is 648731. The next prime is 648763. The reversal of 648744 is 447846.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13492 + ... + 13539.

It is an arithmetic number, because the mean of its divisors is an integer number (101370).

2⁶⁴⁸⁷⁴⁴ is an apocalyptic number.

It is an amenable number.

648744 is an abundant number, since it is smaller than the sum of its proper divisors (973176).

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

648744 is a wasteful number, since it uses less digits than its factorization.

648744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27040 (or 27036 counting only the distinct ones).

The product of its digits is 21504, while the sum is 33.

The square root of 648744 is about 805.4464600456. The cubic root of 648744 is about 86.5680798751.

The spelling of 648744 in words is "six hundred forty-eight thousand, seven hundred forty-four".