16690071 has 16 divisors (see below), whose sum is σ = 23294304. Its totient is φ = 10617984.

The previous prime is 16690057. The next prime is 16690103. The reversal of 16690071 is 17009661.

It is not a de Polignac number, because 16690071 - 2¹⁹ = 16165783 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16690001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4465 + ... + 7301.

It is an arithmetic number, because the mean of its divisors is an integer number (1455894).

Almost surely, 2^16690071 is an apocalyptic number.

16690071 is a deficient number, since it is larger than the sum of its proper divisors (6604233).

16690071 is a wasteful number, since it uses less digits than its factorization.

16690071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2930.

The product of its (nonzero) digits is 2268, while the sum is 30.

The square root of 16690071 is about 4085.3483327618. The cubic root of 16690071 is about 255.5559879500. Note that the first 3 decimals are identical.

The spelling of 16690071 in words is "sixteen million, six hundred ninety thousand, seventy-one".