648830 has 64 divisors (see below), whose sum is σ = 1548288. Its totient is φ = 190080.

The previous prime is 648803. The next prime is 648841. The reversal of 648830 is 38846.

It is a junction number, because it is equal to n+sod(n) for n = 648793 and 648802.

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 31 ways as a sum of consecutive naturals, for example, 20915 + ... + 20945.

It is an arithmetic number, because the mean of its divisors is an integer number (24192).

2⁶⁴⁸⁸³⁰ is an apocalyptic number.

It is a pronic number, being equal to 805×806.

648830 is an abundant number, since it is smaller than the sum of its proper divisors (899458).

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

648830 is a wasteful number, since it uses less digits than its factorization.

648830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81.

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 648830 is about 805.4998448169. The cubic root of 648830 is about 86.5719049719.

The spelling of 648830 in words is "six hundred forty-eight thousand, eight hundred thirty".