16666408 has 16 divisors (see below), whose sum is σ = 34090560. Its totient is φ = 7575600.

The previous prime is 16666381. The next prime is 16666417. The reversal of 16666408 is 80466661.

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, 94608 + ... + 94783.

It is an arithmetic number, because the mean of its divisors is an integer number (2130660).

Almost surely, 2^16666408 is an apocalyptic number.

It is an amenable number.

16666408 is an abundant number, since it is smaller than the sum of its proper divisors (17424152).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16666408 is a wasteful number, since it uses less digits than its factorization.

16666408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189408 (or 189404 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 37.

The square root of 16666408 is about 4082.4512244484. The cubic root of 16666408 is about 255.4351559996.

The spelling of 16666408 in words is "sixteen million, six hundred sixty-six thousand, four hundred eight".