668693740274 has 96 divisors (see below), whose sum is σ = 1195610637312. Its totient is φ = 279608112000.

The previous prime is 668693740271. The next prime is 668693740291. The reversal of 668693740274 is 472047396866.

668693740274 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (668693740271) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 280844564 + ... + 280846944.

It is an arithmetic number, because the mean of its divisors is an integer number (12454277472).

Almost surely, 2^668693740274 is an apocalyptic number.

668693740274 is a deficient number, since it is larger than the sum of its proper divisors (526916897038).

668693740274 is a wasteful number, since it uses less digits than its factorization.

668693740274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2872 (or 2865 counting only the distinct ones).

The product of its (nonzero) digits is 73156608, while the sum is 62.

The spelling of 668693740274 in words is "six hundred sixty-eight billion, six hundred ninety-three million, seven hundred forty thousand, two hundred seventy-four".