668372622 has 8 divisors (see below), whose sum is σ = 1336745256. Its totient is φ = 222790872.

The previous prime is 668372609. The next prime is 668372641. The reversal of 668372622 is 226273866.

It is a sphenic number, since it is the product of 3 distinct primes.

668372622 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55697713 + ... + 55697724.

It is an arithmetic number, because the mean of its divisors is an integer number (167093157).

Almost surely, 2^668372622 is an apocalyptic number.

668372622 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

668372622 is a wasteful number, since it uses less digits than its factorization.

668372622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111395442.

The product of its digits is 290304, while the sum is 42.

The square root of 668372622 is about 25852.9035506653. The cubic root of 668372622 is about 874.3249746731.

The spelling of 668372622 in words is "six hundred sixty-eight million, three hundred seventy-two thousand, six hundred twenty-two".