648242 has 16 divisors (see below), whose sum is σ = 1170240. Its totient is φ = 263088.

The previous prime is 648239. The next prime is 648257. The reversal of 648242 is 242846.

It is an Ulam number.

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, 953 + ... + 1484.

It is an arithmetic number, because the mean of its divisors is an integer number (73140).

2⁶⁴⁸²⁴² is an apocalyptic number.

648242 is a deficient number, since it is larger than the sum of its proper divisors (521998).

648242 is a wasteful number, since it uses less digits than its factorization.

648242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2465.

The product of its digits is 3072, while the sum is 26.

The square root of 648242 is about 805.1347713271. The cubic root of 648242 is about 86.5457452356.

It can be divided in two parts, 648 and 242, that multiplied together give a square (156816 = 396²).

The spelling of 648242 in words is "six hundred forty-eight thousand, two hundred forty-two".