648694 has 16 divisors (see below), whose sum is σ = 1018368. Its totient is φ = 309672.

The previous prime is 648689. The next prime is 648709. The reversal of 648694 is 496846.

It is a congruent number.

It is an unprimeable 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, 6247 + ... + 6349.

It is an arithmetic number, because the mean of its divisors is an integer number (63648).

2⁶⁴⁸⁶⁹⁴ is an apocalyptic number.

648694 is a deficient number, since it is larger than the sum of its proper divisors (369674).

648694 is a wasteful number, since it uses less digits than its factorization.

648694 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219.

The product of its digits is 41472, while the sum is 37.

The square root of 648694 is about 805.4154207612. The cubic root of 648694 is about 86.5658558261.

The spelling of 648694 in words is "six hundred forty-eight thousand, six hundred ninety-four".