668832273 has 6 divisors (see below), whose sum is σ = 966091074. Its totient is φ = 445888176.

The previous prime is 668832259. The next prime is 668832301. The reversal of 668832273 is 372238866.

668832273 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 467986689 + 200845584 = 21633^2 + 14172^2 .

It is not a de Polignac number, because 668832273 - 2⁶ = 668832209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (668830273) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 37157340 + ... + 37157357.

It is an arithmetic number, because the mean of its divisors is an integer number (161015179).

Almost surely, 2^668832273 is an apocalyptic number.

It is an amenable number.

668832273 is a deficient number, since it is larger than the sum of its proper divisors (297258801).

668832273 is a wasteful number, since it uses less digits than its factorization.

668832273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74314703 (or 74314700 counting only the distinct ones).

The product of its digits is 580608, while the sum is 45.

The square root of 668832273 is about 25861.7917592730. The cubic root of 668832273 is about 874.5253580338.

The spelling of 668832273 in words is "six hundred sixty-eight million, eight hundred thirty-two thousand, two hundred seventy-three".