16668454 has 16 divisors (see below), whose sum is σ = 27585360. Its totient is φ = 7490560.

The previous prime is 16668451. The next prime is 16668467. The reversal of 16668454 is 45486661.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16668451) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2299 + ... + 6214.

It is an arithmetic number, because the mean of its divisors is an integer number (1724085).

Almost surely, 2^16668454 is an apocalyptic number.

16668454 is a deficient number, since it is larger than the sum of its proper divisors (10916906).

16668454 is a wasteful number, since it uses less digits than its factorization.

16668454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8615.

The product of its digits is 138240, while the sum is 40.

The square root of 16668454 is about 4082.7018015035. The cubic root of 16668454 is about 255.4456081407.

The spelling of 16668454 in words is "sixteen million, six hundred sixty-eight thousand, four hundred fifty-four".