668750313 has 16 divisors (see below), whose sum is σ = 1111689216. Its totient is φ = 347402640.

The previous prime is 668750311. The next prime is 668750317. The reversal of 668750313 is 313057866.

It is not a de Polignac number, because 668750313 - 2¹ = 668750311 is a prime.

It is a super-2 number, since 2×668750313² = 894453962275195938, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (668750311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1447281 + ... + 1447742.

It is an arithmetic number, because the mean of its divisors is an integer number (69480576).

Almost surely, 2^668750313 is an apocalyptic number.

It is an amenable number.

668750313 is a deficient number, since it is larger than the sum of its proper divisors (442938903).

668750313 is a wasteful number, since it uses less digits than its factorization.

668750313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2895044.

The product of its (nonzero) digits is 90720, while the sum is 39.

The square root of 668750313 is about 25860.2071337412. The cubic root of 668750313 is about 874.4896345651.

The spelling of 668750313 in words is "six hundred sixty-eight million, seven hundred fifty thousand, three hundred thirteen".