5865661 has 8 divisors (see below), whose sum is σ = 6221600. Its totient is φ = 5514480.

The previous prime is 5865653. The next prime is 5865679. The reversal of 5865661 is 1665685.

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 5865661 - 2³ = 5865653 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 5865661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5865611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1531 + ... + 3751.

It is an arithmetic number, because the mean of its divisors is an integer number (777700).

Almost surely, 2^5865661 is an apocalyptic number.

It is an amenable number.

5865661 is a deficient number, since it is larger than the sum of its proper divisors (355939).

5865661 is a wasteful number, since it uses less digits than its factorization.

5865661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2379.

The product of its digits is 43200, while the sum is 37.

The square root of 5865661 is about 2421.9126739005. The cubic root of 5865661 is about 180.3456424445.

The spelling of 5865661 in words is "five million, eight hundred sixty-five thousand, six hundred sixty-one".