668834049 has 16 divisors (see below), whose sum is σ = 962906112. Its totient is φ = 410506368.

The previous prime is 668834041. The next prime is 668834051. The reversal of 668834049 is 940438866.

668834049 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 668834049 - 2³ = 668834041 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 668833989 and 668834007.

It is not an unprimeable number, because it can be changed into a prime (668834041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7452 + ... + 37325.

It is an arithmetic number, because the mean of its divisors is an integer number (60181632).

Almost surely, 2^668834049 is an apocalyptic number.

It is an amenable number.

668834049 is a deficient number, since it is larger than the sum of its proper divisors (294072063).

668834049 is a wasteful number, since it uses less digits than its factorization.

668834049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45176.

The product of its (nonzero) digits is 995328, while the sum is 48.

The square root of 668834049 is about 25861.8260956182. The cubic root of 668834049 is about 874.5261320971.

The spelling of 668834049 in words is "six hundred sixty-eight million, eight hundred thirty-four thousand, forty-nine".