16660966 has 8 divisors (see below), whose sum is σ = 28561680. Its totient is φ = 7140408.

The previous prime is 16660961. The next prime is 16660979. The reversal of 16660966 is 66906661.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16660961) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 595021 + ... + 595048.

It is an arithmetic number, because the mean of its divisors is an integer number (3570210).

Almost surely, 2^16660966 is an apocalyptic number.

16660966 is a deficient number, since it is larger than the sum of its proper divisors (11900714).

16660966 is a wasteful number, since it uses less digits than its factorization.

16660966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1190078.

The product of its (nonzero) digits is 69984, while the sum is 40.

The square root of 16660966 is about 4081.7846587002. The cubic root of 16660966 is about 255.4073509792.

The spelling of 16660966 in words is "sixteen million, six hundred sixty thousand, nine hundred sixty-six".