16669247 has 12 divisors (see below), whose sum is σ = 19596528. Its totient is φ = 13881600.

The previous prime is 16669223. The next prime is 16669253. The reversal of 16669247 is 74296661.

It is not a de Polignac number, because 16669247 - 2⁶ = 16669183 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16660247) 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 11 ways as a sum of consecutive naturals, for example, 69047 + ... + 69287.

It is an arithmetic number, because the mean of its divisors is an integer number (1633044).

Almost surely, 2^16669247 is an apocalyptic number.

16669247 is a deficient number, since it is larger than the sum of its proper divisors (2927281).

16669247 is an frugal number, since it uses more digits than its factorization.

16669247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 530 (or 289 counting only the distinct ones).

The product of its digits is 108864, while the sum is 41.

The square root of 16669247 is about 4082.7989174095. The cubic root of 16669247 is about 255.4496590094.

The spelling of 16669247 in words is "sixteen million, six hundred sixty-nine thousand, two hundred forty-seven".