3118645 has 4 divisors (see below), whose sum is σ = 3742380. Its totient is φ = 2494912.

The previous prime is 3118637. The next prime is 3118651. The reversal of 3118645 is 5468113.

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 1954404 + 1164241 = 1398^2 + 1079^2 .

It is a cyclic number.

It is not a de Polignac number, because 3118645 - 2³ = 3118637 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 311860 + ... + 311869.

It is an arithmetic number, because the mean of its divisors is an integer number (935595).

Almost surely, 2^3118645 is an apocalyptic number.

It is an amenable number.

3118645 is a deficient number, since it is larger than the sum of its proper divisors (623735).

3118645 is an equidigital number, since it uses as much as digits as its factorization.

3118645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 623734.

The product of its digits is 2880, while the sum is 28.

The square root of 3118645 is about 1765.9685727668. The cubic root of 3118645 is about 146.1017149470.

The spelling of 3118645 in words is "three million, one hundred eighteen thousand, six hundred forty-five".