648188 has 12 divisors (see below), whose sum is σ = 1143912. Its totient is φ = 321360.

The previous prime is 648181. The next prime is 648191. The reversal of 648188 is 881846.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (648181) 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, 95 + ... + 1142.

It is an arithmetic number, because the mean of its divisors is an integer number (95326).

2⁶⁴⁸¹⁸⁸ is an apocalyptic number.

It is an amenable number.

648188 is a deficient number, since it is larger than the sum of its proper divisors (495724).

648188 is a wasteful number, since it uses less digits than its factorization.

648188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1372 (or 1370 counting only the distinct ones).

The product of its digits is 12288, while the sum is 35.

The square root of 648188 is about 805.1012358704. The cubic root of 648188 is about 86.5433420179.

The spelling of 648188 in words is "six hundred forty-eight thousand, one hundred eighty-eight".