3113645 has 4 divisors (see below), whose sum is σ = 3736380. Its totient is φ = 2490912.

The previous prime is 3113641. The next prime is 3113647. The reversal of 3113645 is 5463113.

It is a happy number.

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 1247689 + 1865956 = 1117^2 + 1366^2 .

It is a cyclic number.

It is not a de Polignac number, because 3113645 - 2² = 3113641 is a prime.

It is a super-3 number, since 3×3113645³ = 90558358261622433375, which contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3113645.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3113641) 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, 311360 + ... + 311369.

It is an arithmetic number, because the mean of its divisors is an integer number (934095).

Almost surely, 2^3113645 is an apocalyptic number.

It is an amenable number.

3113645 is a deficient number, since it is larger than the sum of its proper divisors (622735).

3113645 is an equidigital number, since it uses as much as digits as its factorization.

3113645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 622734.

The product of its digits is 1080, while the sum is 23.

The square root of 3113645 is about 1764.5523511645. The cubic root of 3113645 is about 146.0235934849.

Adding to 3113645 its reverse (5463113), we get a palindrome (8576758).

The spelling of 3113645 in words is "three million, one hundred thirteen thousand, six hundred forty-five".