16668958 has 8 divisors (see below), whose sum is σ = 25130952. Its totient is φ = 8291976.

The previous prime is 16668941. The next prime is 16668961. The reversal of 16668958 is 85986661.

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, 20760 + ... + 21547.

It is an arithmetic number, because the mean of its divisors is an integer number (3141369).

Almost surely, 2^16668958 is an apocalyptic number.

16668958 is a deficient number, since it is larger than the sum of its proper divisors (8461994).

16668958 is a wasteful number, since it uses less digits than its factorization.

16668958 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42506.

The product of its digits is 622080, while the sum is 49.

The square root of 16668958 is about 4082.7635248689. The cubic root of 16668958 is about 255.4481827304.

The spelling of 16668958 in words is "sixteen million, six hundred sixty-eight thousand, nine hundred fifty-eight".