668850833 has 12 divisors (see below), whose sum is σ = 811880640. Its totient is φ = 548373672.

The previous prime is 668850811. The next prime is 668850841. The reversal of 668850833 is 338058866.

It is not a de Polignac number, because 668850833 - 2¹⁸ = 668588689 is a prime.

It is a super-2 number, since 2×668850833² = 894722873609587778, which contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (668850803) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 295613 + ... + 297866.

It is an arithmetic number, because the mean of its divisors is an integer number (67656720).

Almost surely, 2^668850833 is an apocalyptic number.

It is an amenable number.

668850833 is a deficient number, since it is larger than the sum of its proper divisors (143029807).

668850833 is a wasteful number, since it uses less digits than its factorization.

668850833 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 593516 (or 593509 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 47.

The square root of 668850833 is about 25862.1505872965. The cubic root of 668850833 is about 874.5334472769.

The spelling of 668850833 in words is "six hundred sixty-eight million, eight hundred fifty thousand, eight hundred thirty-three".