16745947 has 4 divisors (see below), whose sum is σ = 16760320. Its totient is φ = 16731576.

The previous prime is 16745893. The next prime is 16745951. The reversal of 16745947 is 74954761.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 16745947 - 2⁷ = 16745819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16745957) 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 3 ways as a sum of consecutive naturals, for example, 5268 + ... + 7825.

It is an arithmetic number, because the mean of its divisors is an integer number (4190080).

Almost surely, 2^16745947 is an apocalyptic number.

16745947 is a deficient number, since it is larger than the sum of its proper divisors (14373).

16745947 is a wasteful number, since it uses less digits than its factorization.

16745947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14372.

The product of its digits is 211680, while the sum is 43.

The square root of 16745947 is about 4092.1812032216. The cubic root of 16745947 is about 255.8408587326.

The spelling of 16745947 in words is "sixteen million, seven hundred forty-five thousand, nine hundred forty-seven".