668333053 has 8 divisors (see below), whose sum is σ = 708418872. Its totient is φ = 628333056.

The previous prime is 668333041. The next prime is 668333063. The reversal of 668333053 is 350333866.

It can be written as a sum of positive squares in 4 ways, for example, as 53392249 + 614940804 = 7307^2 + 24798^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 668333053 - 2¹³ = 668324861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (668333033) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5050 + ... + 36907.

It is an arithmetic number, because the mean of its divisors is an integer number (88552359).

Almost surely, 2^668333053 is an apocalyptic number.

It is an amenable number.

668333053 is a deficient number, since it is larger than the sum of its proper divisors (40085819).

668333053 is a wasteful number, since it uses less digits than its factorization.

668333053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42911.

The product of its (nonzero) digits is 116640, while the sum is 37.

The square root of 668333053 is about 25852.1382674625. The cubic root of 668333053 is about 874.3077204018.

The spelling of 668333053 in words is "six hundred sixty-eight million, three hundred thirty-three thousand, fifty-three".