648854 has 4 divisors (see below), whose sum is σ = 973284. Its totient is φ = 324426.

The previous prime is 648841. The next prime is 648859. The reversal of 648854 is 458846.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 458846 = 2 ⋅229423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (648859) by changing a digit.

648854 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 (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 162212 + ... + 162215.

It is an arithmetic number, because the mean of its divisors is an integer number (243321).

2⁶⁴⁸⁸⁵⁴ is an apocalyptic number.

648854 is a deficient number, since it is larger than the sum of its proper divisors (324430).

648854 is a wasteful number, since it uses less digits than its factorization.

648854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324429.

The product of its digits is 30720, while the sum is 35.

The square root of 648854 is about 805.5147422611. The cubic root of 648854 is about 86.5729723805.

The spelling of 648854 in words is "six hundred forty-eight thousand, eight hundred fifty-four".