648833 has 4 divisors (see below), whose sum is σ = 655620. Its totient is φ = 642048.

The previous prime is 648803. The next prime is 648841. The reversal of 648833 is 338846.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 425104 + 223729 = 652^2 + 473^2 .

It is a cyclic number.

It is not a de Polignac number, because 648833 - 2¹⁰ = 647809 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 648833.

It is not an unprimeable number, because it can be changed into a prime (648803) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3248 + ... + 3441.

It is an arithmetic number, because the mean of its divisors is an integer number (163905).

2⁶⁴⁸⁸³³ is an apocalyptic number.

It is an amenable number.

648833 is a deficient number, since it is larger than the sum of its proper divisors (6787).

648833 is an equidigital number, since it uses as much as digits as its factorization.

648833 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6786.

The product of its digits is 13824, while the sum is 32.

The square root of 648833 is about 805.5017070125. The cubic root of 648833 is about 86.5720383995.

The spelling of 648833 in words is "six hundred forty-eight thousand, eight hundred thirty-three".