16607666 has 8 divisors (see below), whose sum is σ = 25011504. Its totient is φ = 8270500.

The previous prime is 16607659. The next prime is 16607671. The reversal of 16607666 is 66670661.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

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, 16040 + ... + 17043.

It is an arithmetic number, because the mean of its divisors is an integer number (3126438).

Almost surely, 2^16607666 is an apocalyptic number.

16607666 is a deficient number, since it is larger than the sum of its proper divisors (8403838).

16607666 is a wasteful number, since it uses less digits than its factorization.

16607666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33336.

The product of its (nonzero) digits is 54432, while the sum is 38.

The square root of 16607666 is about 4075.2504217532. The cubic root of 16607666 is about 255.1347026363.

The spelling of 16607666 in words is "sixteen million, six hundred seven thousand, six hundred sixty-six".