16690473 has 6 divisors (see below), whose sum is σ = 24108474. Its totient is φ = 11126976.

The previous prime is 16690469. The next prime is 16690507. The reversal of 16690473 is 37409661.

It can be written as a sum of positive squares in only one way, i.e., 11614464 + 5076009 = 3408^2 + 2253^2 .

It is not a de Polignac number, because 16690473 - 2² = 16690469 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (16690423) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 927240 + ... + 927257.

It is an arithmetic number, because the mean of its divisors is an integer number (4018079).

Almost surely, 2^16690473 is an apocalyptic number.

It is an amenable number.

16690473 is a deficient number, since it is larger than the sum of its proper divisors (7418001).

16690473 is a wasteful number, since it uses less digits than its factorization.

16690473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1854503 (or 1854500 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The square root of 16690473 is about 4085.3975326766. The cubic root of 16690473 is about 255.5580397224.

The spelling of 16690473 in words is "sixteen million, six hundred ninety thousand, four hundred seventy-three".