668746244083 has 4 divisors (see below), whose sum is σ = 668762046568. Its totient is φ = 668730441600.

The previous prime is 668746244057. The next prime is 668746244107. The reversal of 668746244083 is 380442647866.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-668746244083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (668746247083) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7837593 + ... + 7922458.

It is an arithmetic number, because the mean of its divisors is an integer number (167190511642).

Almost surely, 2^668746244083 is an apocalyptic number.

668746244083 is a deficient number, since it is larger than the sum of its proper divisors (15802485).

668746244083 is a wasteful number, since it uses less digits than its factorization.

668746244083 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15802484.

The product of its (nonzero) digits is 37158912, while the sum is 58.

The spelling of 668746244083 in words is "six hundred sixty-eight billion, seven hundred forty-six million, two hundred forty-four thousand, eighty-three".