16774913 has 4 divisors (see below), whose sum is σ = 16822788. Its totient is φ = 16727040.

The previous prime is 16774909. The next prime is 16774921. The reversal of 16774913 is 31947761.

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

It can be written as a sum of positive squares in 2 ways, for example, as 11336689 + 5438224 = 3367^2 + 2332^2 .

It is a cyclic number.

It is not a de Polignac number, because 16774913 - 2² = 16774909 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16774973) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23408 + ... + 24113.

It is an arithmetic number, because the mean of its divisors is an integer number (4205697).

Almost surely, 2^16774913 is an apocalyptic number.

It is an amenable number.

16774913 is a deficient number, since it is larger than the sum of its proper divisors (47875).

16774913 is an equidigital number, since it uses as much as digits as its factorization.

16774913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47874.

The product of its digits is 31752, while the sum is 38.

The square root of 16774913 is about 4095.7188624221. The cubic root of 16774913 is about 255.9882858002.

The spelling of 16774913 in words is "sixteen million, seven hundred seventy-four thousand, nine hundred thirteen".