3147689 has 4 divisors (see below), whose sum is σ = 3256260. Its totient is φ = 3039120.

The previous prime is 3147679. The next prime is 3147707. The reversal of 3147689 is 9867413.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9867413 = 2437 ⋅4049.

It can be written as a sum of positive squares in 2 ways, for example, as 2301289 + 846400 = 1517^2 + 920^2 .

It is a cyclic number.

It is not a de Polignac number, because 3147689 - 2⁸ = 3147433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3147629) 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, 54242 + ... + 54299.

It is an arithmetic number, because the mean of its divisors is an integer number (814065).

Almost surely, 2^3147689 is an apocalyptic number.

It is an amenable number.

3147689 is a deficient number, since it is larger than the sum of its proper divisors (108571).

3147689 is a wasteful number, since it uses less digits than its factorization.

3147689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108570.

The product of its digits is 36288, while the sum is 38.

The square root of 3147689 is about 1774.1727649809. The cubic root of 3147689 is about 146.5538635625.

The spelling of 3147689 in words is "three million, one hundred forty-seven thousand, six hundred eighty-nine".