668358214 has 8 divisors (see below), whose sum is σ = 1003310640. Its totient is φ = 333921336.

The previous prime is 668358209. The next prime is 668358221. The reversal of 668358214 is 412853866.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 125629 + ... + 130840.

It is an arithmetic number, because the mean of its divisors is an integer number (125413830).

Almost surely, 2^668358214 is an apocalyptic number.

668358214 is a deficient number, since it is larger than the sum of its proper divisors (334952426).

668358214 is a wasteful number, since it uses less digits than its factorization.

668358214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257774.

The product of its digits is 276480, while the sum is 43.

The square root of 668358214 is about 25852.6248957432. The cubic root of 668358214 is about 874.3186920675.

The spelling of 668358214 in words is "six hundred sixty-eight million, three hundred fifty-eight thousand, two hundred fourteen".