5661365 has 8 divisors (see below), whose sum is σ = 6807480. Its totient is φ = 4519872.

The previous prime is 5661343. The next prime is 5661367. The reversal of 5661365 is 5631665.

It can be written as a sum of positive squares in 4 ways, for example, as 11236 + 5650129 = 106^2 + 2377^2 .

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 5661365 - 2¹⁰ = 5660341 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5661367) 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, 2747 + ... + 4343.

It is an arithmetic number, because the mean of its divisors is an integer number (850935).

Almost surely, 2^5661365 is an apocalyptic number.

It is an amenable number.

5661365 is a deficient number, since it is larger than the sum of its proper divisors (1146115).

5661365 is a wasteful number, since it uses less digits than its factorization.

5661365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2311.

The product of its digits is 16200, while the sum is 32.

The square root of 5661365 is about 2379.3623095275. The cubic root of 5661365 is about 178.2270909581.

The spelling of 5661365 in words is "five million, six hundred sixty-one thousand, three hundred sixty-five".