668094426 has 32 divisors (see below), whose sum is σ = 1520870400. Its totient is φ = 217265760.

The previous prime is 668094421. The next prime is 668094433. The reversal of 668094426 is 624490866.

668094426 is a `hidden beast` number, since 66 + 80 + 94 + 426 = 666.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (668094421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 148666 + ... + 153093.

It is an arithmetic number, because the mean of its divisors is an integer number (47527200).

Almost surely, 2^668094426 is an apocalyptic number.

668094426 is an abundant number, since it is smaller than the sum of its proper divisors (852775974).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

668094426 is a wasteful number, since it uses less digits than its factorization.

668094426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301811 (or 301805 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 45.

The square root of 668094426 is about 25847.5226279038. The cubic root of 668094426 is about 874.2036513985.

The spelling of 668094426 in words is "six hundred sixty-eight million, ninety-four thousand, four hundred twenty-six".