16660959 has 8 divisors (see below), whose sum is σ = 25388160. Its totient is φ = 9520536.

The previous prime is 16660939. The next prime is 16660961. The reversal of 16660959 is 95906661.

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

It is not a de Polignac number, because 16660959 - 2⁹ = 16660447 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16660959.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16660939) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 396669 + ... + 396710.

It is an arithmetic number, because the mean of its divisors is an integer number (3173520).

Almost surely, 2^16660959 is an apocalyptic number.

16660959 is a deficient number, since it is larger than the sum of its proper divisors (8727201).

16660959 is an equidigital number, since it uses as much as digits as its factorization.

16660959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 793389.

The product of its (nonzero) digits is 87480, while the sum is 42.

The square root of 16660959 is about 4081.7838012320. The cubic root of 16660959 is about 255.4073152099.

The spelling of 16660959 in words is "sixteen million, six hundred sixty thousand, nine hundred fifty-nine".