16659477 has 12 divisors (see below), whose sum is σ = 24278124. Its totient is φ = 11007360.

The previous prime is 16659463. The next prime is 16659481. The reversal of 16659477 is 77495661.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 86436 + 16573041 = 294^2 + 4071^2 .

It is not a de Polignac number, because 16659477 - 2⁶ = 16659413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16659497) 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 11 ways as a sum of consecutive naturals, for example, 7174 + ... + 9207.

It is an arithmetic number, because the mean of its divisors is an integer number (2023177).

Almost surely, 2^16659477 is an apocalyptic number.

It is an amenable number.

16659477 is a deficient number, since it is larger than the sum of its proper divisors (7618647).

16659477 is a wasteful number, since it uses less digits than its factorization.

16659477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16500 (or 16497 counting only the distinct ones).

The product of its digits is 317520, while the sum is 45.

The square root of 16659477 is about 4081.6022589174. The cubic root of 16659477 is about 255.3997421192.

The spelling of 16659477 in words is "sixteen million, six hundred fifty-nine thousand, four hundred seventy-seven".