648894 has 16 divisors (see below), whose sum is σ = 1314432. Its totient is φ = 213528.

The previous prime is 648889. The next prime is 648911. The reversal of 648894 is 498846.

It is a congruent number.

It is an unprimeable number.

648894 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 7 ways as a sum of consecutive naturals, for example, 154 + ... + 1149.

It is an arithmetic number, because the mean of its divisors is an integer number (82152).

2⁶⁴⁸⁸⁹⁴ is an apocalyptic number.

648894 is an abundant number, since it is smaller than the sum of its proper divisors (665538).

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

648894 is a wasteful number, since it uses less digits than its factorization.

648894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1391.

The product of its digits is 55296, while the sum is 39.

The square root of 648894 is about 805.5395707226. The cubic root of 648894 is about 86.5747513363.

The spelling of 648894 in words is "six hundred forty-eight thousand, eight hundred ninety-four".