5986661 has 4 divisors (see below), whose sum is σ = 6009024. Its totient is φ = 5964300.

The previous prime is 5986621. The next prime is 5986663. The reversal of 5986661 is 1666895.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 5986661 - 2⁶ = 5986597 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 (5986663) by changing a digit.

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, 10775 + ... + 11316.

It is an arithmetic number, because the mean of its divisors is an integer number (1502256).

Almost surely, 2^5986661 is an apocalyptic number.

It is an amenable number.

5986661 is a deficient number, since it is larger than the sum of its proper divisors (22363).

5986661 is a wasteful number, since it uses less digits than its factorization.

5986661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22362.

The product of its digits is 77760, while the sum is 41.

The square root of 5986661 is about 2446.7654158092. The cubic root of 5986661 is about 181.5773006391.

The spelling of 5986661 in words is "five million, nine hundred eighty-six thousand, six hundred sixty-one".