16940659 has 4 divisors (see below), whose sum is σ = 16952104. Its totient is φ = 16929216.

The previous prime is 16940639. The next prime is 16940689. The reversal of 16940659 is 95604961.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 16940659 - 2⁷ = 16940531 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16940639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3102 + ... + 6595.

It is an arithmetic number, because the mean of its divisors is an integer number (4238026).

Almost surely, 2^16940659 is an apocalyptic number.

16940659 is a deficient number, since it is larger than the sum of its proper divisors (11445).

16940659 is an equidigital number, since it uses as much as digits as its factorization.

16940659 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11444.

The product of its (nonzero) digits is 58320, while the sum is 40.

The square root of 16940659 is about 4115.9031815629. The cubic root of 16940659 is about 256.8286290598.

The spelling of 16940659 in words is "sixteen million, nine hundred forty thousand, six hundred fifty-nine".