16245689 has 4 divisors (see below), whose sum is σ = 16276260. Its totient is φ = 16215120.

The previous prime is 16245667. The next prime is 16245731. The reversal of 16245689 is 98654261.

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: 98654261 = 1549 ⋅63689.

It can be written as a sum of positive squares in 2 ways, for example, as 12482089 + 3763600 = 3533^2 + 1940^2 .

It is a cyclic number.

It is not a de Polignac number, because 16245689 - 2⁸ = 16245433 is a prime.

It is a super-2 number, since 2×16245689² = 527844822169442, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16245629) 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 3 ways as a sum of consecutive naturals, for example, 14474 + ... + 15555.

It is an arithmetic number, because the mean of its divisors is an integer number (4069065).

Almost surely, 2^16245689 is an apocalyptic number.

It is an amenable number.

16245689 is a deficient number, since it is larger than the sum of its proper divisors (30571).

16245689 is an equidigital number, since it uses as much as digits as its factorization.

16245689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30570.

The product of its digits is 103680, while the sum is 41.

The square root of 16245689 is about 4030.5941249399. The cubic root of 16245689 is about 253.2674503577.

The spelling of 16245689 in words is "sixteen million, two hundred forty-five thousand, six hundred eighty-nine".