648833806 has 4 divisors (see below), whose sum is σ = 973250712. Its totient is φ = 324416902.

The previous prime is 648833741. The next prime is 648833807. The reversal of 648833806 is 608338846.

648833806 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (648833807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 162208450 + ... + 162208453.

It is an arithmetic number, because the mean of its divisors is an integer number (243312678).

Almost surely, 2^648833806 is an apocalyptic number.

648833806 is a deficient number, since it is larger than the sum of its proper divisors (324416906).

648833806 is a wasteful number, since it uses less digits than its factorization.

648833806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324416905.

The product of its (nonzero) digits is 663552, while the sum is 46.

The square root of 648833806 is about 25472.2163542947. The cubic root of 648833806 is about 865.7207424690.

The spelling of 648833806 in words is "six hundred forty-eight million, eight hundred thirty-three thousand, eight hundred six".