648893 has 4 divisors (see below), whose sum is σ = 741600. Its totient is φ = 556188.

The previous prime is 648889. The next prime is 648911. The reversal of 648893 is 398846.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 648893 - 2² = 648889 is a prime.

It is a Duffinian number.

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 648893.

It is not an unprimeable number, because it can be changed into a prime (648803) 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 3 ways as a sum of consecutive naturals, for example, 46343 + ... + 46356.

It is an arithmetic number, because the mean of its divisors is an integer number (185400).

2⁶⁴⁸⁸⁹³ is an apocalyptic number.

It is an amenable number.

648893 is a deficient number, since it is larger than the sum of its proper divisors (92707).

648893 is an equidigital number, since it uses as much as digits as its factorization.

648893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92706.

The product of its digits is 41472, while the sum is 38.

The square root of 648893 is about 805.5389500204. The cubic root of 648893 is about 86.5747068633.

Subtracting from 648893 its reverse (398846), we obtain a cube (250047 = 63³).

The spelling of 648893 in words is "six hundred forty-eight thousand, eight hundred ninety-three".