306685017668 has 6 divisors (see below), whose sum is σ = 536698780926. Its totient is φ = 153342508832.

The previous prime is 306685017637. The next prime is 306685017713. The reversal of 306685017668 is 866710586603.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 235256041024 + 71428976644 = 485032^2 + 267262^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38335627205 + ... + 38335627212.

It is an arithmetic number, because the mean of its divisors is an integer number (89449796821).

Almost surely, 2^306685017668 is an apocalyptic number.

It is an amenable number.

306685017668 is a deficient number, since it is larger than the sum of its proper divisors (230013763258).

306685017668 is a wasteful number, since it uses less digits than its factorization.

306685017668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76671254421 (or 76671254419 counting only the distinct ones).

The product of its (nonzero) digits is 8709120, while the sum is 56.

The spelling of 306685017668 in words is "three hundred six billion, six hundred eighty-five million, seventeen thousand, six hundred sixty-eight".