16690671 has 8 divisors (see below), whose sum is σ = 24726960. Its totient is φ = 11127096.

The previous prime is 16690657. The next prime is 16690673. The reversal of 16690671 is 17609661.

It is not a de Polignac number, because 16690671 - 2¹⁵ = 16657903 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16690673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 309060 + ... + 309113.

It is an arithmetic number, because the mean of its divisors is an integer number (3090870).

Almost surely, 2^16690671 is an apocalyptic number.

16690671 is a deficient number, since it is larger than the sum of its proper divisors (8036289).

16690671 is an equidigital number, since it uses as much as digits as its factorization.

16690671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 618182 (or 618176 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The square root of 16690671 is about 4085.4217652526. The cubic root of 16690671 is about 255.5590502848.

The spelling of 16690671 in words is "sixteen million, six hundred ninety thousand, six hundred seventy-one".