16774945 has 32 divisors (see below), whose sum is σ = 23151744. Its totient is φ = 11558400.

The previous prime is 16774931. The next prime is 16774973. The reversal of 16774945 is 54947761.

It is not a de Polignac number, because 16774945 - 2¹⁵ = 16742177 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a nialpdrome in base 16.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 96879 + ... + 97051.

It is an arithmetic number, because the mean of its divisors is an integer number (723492).

Almost surely, 2^16774945 is an apocalyptic number.

16774945 is the 2365-th octagonal number.

It is an amenable number.

16774945 is a deficient number, since it is larger than the sum of its proper divisors (6376799).

16774945 is a wasteful number, since it uses less digits than its factorization.

16774945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273.

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

The square root of 16774945 is about 4095.7227689383. The cubic root of 16774945 is about 255.9884485755.

The spelling of 16774945 in words is "sixteen million, seven hundred seventy-four thousand, nine hundred forty-five".