16677947 has 16 divisors (see below), whose sum is σ = 19719168. Its totient is φ = 13906080.

The previous prime is 16677931. The next prime is 16677979. The reversal of 16677947 is 74977661.

It is a cyclic number.

It is not a de Polignac number, because 16677947 - 2⁴ = 16677931 is a prime.

It is a super-2 number, since 2×16677947² = 556307832269618, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16677247) 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, 31628 + ... + 32150.

It is an arithmetic number, because the mean of its divisors is an integer number (1232448).

Almost surely, 2^16677947 is an apocalyptic number.

16677947 is a deficient number, since it is larger than the sum of its proper divisors (3041221).

16677947 is a wasteful number, since it uses less digits than its factorization.

16677947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 770.

The product of its digits is 444528, while the sum is 47.

The square root of 16677947 is about 4083.8642239918. The cubic root of 16677947 is about 255.4940926403.

The spelling of 16677947 in words is "sixteen million, six hundred seventy-seven thousand, nine hundred forty-seven".