16382689 has 4 divisors (see below), whose sum is σ = 16395156. Its totient is φ = 16370224.

The previous prime is 16382677. The next prime is 16382719. The reversal of 16382689 is 98628361.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 98628361 = 13 ⋅7586797.

It can be written as a sum of positive squares in 2 ways, for example, as 12006225 + 4376464 = 3465^2 + 2092^2 .

It is a cyclic number.

It is not a de Polignac number, because 16382689 - 2¹³ = 16374497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16382609) 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, 3994 + ... + 6979.

It is an arithmetic number, because the mean of its divisors is an integer number (4098789).

Almost surely, 2^16382689 is an apocalyptic number.

It is an amenable number.

16382689 is a deficient number, since it is larger than the sum of its proper divisors (12467).

16382689 is a wasteful number, since it uses less digits than its factorization.

16382689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12466.

The product of its digits is 124416, while the sum is 43.

The square root of 16382689 is about 4047.5534585722. The cubic root of 16382689 is about 253.9773937762.

It can be divided in two parts, 16382 and 689, that added together give a palindrome (17071).

The spelling of 16382689 in words is "sixteen million, three hundred eighty-two thousand, six hundred eighty-nine".