16434685 has 4 divisors (see below), whose sum is σ = 19721628. Its totient is φ = 13147744.

The previous prime is 16434679. The next prime is 16434701. The reversal of 16434685 is 58643461.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 58643461 = 1949 ⋅30089.

It can be written as a sum of positive squares in 2 ways, for example, as 9369721 + 7064964 = 3061^2 + 2658^2 .

It is a cyclic number.

It is not a de Polignac number, because 16434685 - 2⁵ = 16434653 is a prime.

It is a Duffinian number.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 1643464 + ... + 1643473.

It is an arithmetic number, because the mean of its divisors is an integer number (4930407).

Almost surely, 2^16434685 is an apocalyptic number.

It is an amenable number.

16434685 is a deficient number, since it is larger than the sum of its proper divisors (3286943).

16434685 is an equidigital number, since it uses as much as digits as its factorization.

16434685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3286942.

The product of its digits is 69120, while the sum is 37.

The square root of 16434685 is about 4053.9715095200. The cubic root of 16434685 is about 254.2458043755.

It can be divided in two parts, 1643 and 4685, that added together give a triangular number (6328 = T₁₁₂).

The spelling of 16434685 in words is "sixteen million, four hundred thirty-four thousand, six hundred eighty-five".