3115645 has 8 divisors (see below), whose sum is σ = 4026456. Its totient is φ = 2300736.

The previous prime is 3115643. The next prime is 3115657. The reversal of 3115645 is 5465113.

It can be written as a sum of positive squares in 4 ways, for example, as 56644 + 3059001 = 238^2 + 1749^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3115645 - 2¹ = 3115643 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3115643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23902 + ... + 24031.

It is an arithmetic number, because the mean of its divisors is an integer number (503307).

Almost surely, 2^3115645 is an apocalyptic number.

It is an amenable number.

3115645 is a deficient number, since it is larger than the sum of its proper divisors (910811).

3115645 is a wasteful number, since it uses less digits than its factorization.

3115645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47951.

The product of its digits is 1800, while the sum is 25.

The square root of 3115645 is about 1765.1189761600. The cubic root of 3115645 is about 146.0548520986.

The spelling of 3115645 in words is "three million, one hundred fifteen thousand, six hundred forty-five".