689966333 has 4 divisors (see below), whose sum is σ = 788532960. Its totient is φ = 591399708.

The previous prime is 689966309. The next prime is 689966341. The reversal of 689966333 is 333669986.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 689966333 - 2⁸ = 689966077 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 (689966833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49283303 + ... + 49283316.

It is an arithmetic number, because the mean of its divisors is an integer number (197133240).

Almost surely, 2^689966333 is an apocalyptic number.

It is an amenable number.

689966333 is a deficient number, since it is larger than the sum of its proper divisors (98566627).

689966333 is an equidigital number, since it uses as much as digits as its factorization.

689966333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98566626.

The product of its digits is 3779136, while the sum is 53.

The square root of 689966333 is about 26267.2102249173. The cubic root of 689966333 is about 883.6412200101.

The spelling of 689966333 in words is "six hundred eighty-nine million, nine hundred sixty-six thousand, three hundred thirty-three".