16668874 has 16 divisors (see below), whose sum is σ = 26553096. Its totient is φ = 7820800.

The previous prime is 16668853. The next prime is 16668887. The reversal of 16668874 is 47886661.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 15264649 + 1404225 = 3907^2 + 1185^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17244 + ... + 18184.

Almost surely, 2^16668874 is an apocalyptic number.

16668874 is a deficient number, since it is larger than the sum of its proper divisors (9884222).

16668874 is a wasteful number, since it uses less digits than its factorization.

16668874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1481.

The product of its digits is 387072, while the sum is 46.

The square root of 16668874 is about 4082.7532377061. The cubic root of 16668874 is about 255.4477536358.

The spelling of 16668874 in words is "sixteen million, six hundred sixty-eight thousand, eight hundred seventy-four".