5645617 has 4 divisors (see below), whose sum is σ = 5651316. Its totient is φ = 5639920.

The previous prime is 5645609. The next prime is 5645623. The reversal of 5645617 is 7165465.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 4227136 + 1418481 = 2056^2 + 1191^2 .

It is a cyclic number.

It is not a de Polignac number, because 5645617 - 2³ = 5645609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5645657) 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, 934 + ... + 3487.

It is an arithmetic number, because the mean of its divisors is an integer number (1412829).

Almost surely, 2^5645617 is an apocalyptic number.

It is an amenable number.

5645617 is a deficient number, since it is larger than the sum of its proper divisors (5699).

5645617 is a wasteful number, since it uses less digits than its factorization.

5645617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5698.

The product of its digits is 25200, while the sum is 34.

The square root of 5645617 is about 2376.0507149470. The cubic root of 5645617 is about 178.0616816910.

It can be divided in two parts, 56 and 45617, that multiplied together give a palindrome (2554552).

The spelling of 5645617 in words is "five million, six hundred forty-five thousand, six hundred seventeen".