16664854 has 4 divisors (see below), whose sum is σ = 24997284. Its totient is φ = 8332426.

The previous prime is 16664833. The next prime is 16664861. The reversal of 16664854 is 45846661.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 45846661 = 7 ⋅6549523.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4166212 + ... + 4166215.

It is an arithmetic number, because the mean of its divisors is an integer number (6249321).

Almost surely, 2^16664854 is an apocalyptic number.

16664854 is a deficient number, since it is larger than the sum of its proper divisors (8332430).

16664854 is an equidigital number, since it uses as much as digits as its factorization.

16664854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8332429.

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

The square root of 16664854 is about 4082.2608931816. The cubic root of 16664854 is about 255.4272167050.

The spelling of 16664854 in words is "sixteen million, six hundred sixty-four thousand, eight hundred fifty-four".