5689661 has 2 divisors, whose sum is σ = 5689662. Its totient is φ = 5689660.

The previous prime is 5689657. The next prime is 5689703. The reversal of 5689661 is 1669865.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5040025 + 649636 = 2245^2 + 806^2 .

It is a cyclic number.

It is not a de Polignac number, because 5689661 - 2² = 5689657 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5689361) 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 as a sum of consecutive naturals, namely, 2844830 + 2844831.

It is an arithmetic number, because the mean of its divisors is an integer number (2844831).

Almost surely, 2^5689661 is an apocalyptic number.

It is an amenable number.

5689661 is a deficient number, since it is larger than the sum of its proper divisors (1).

5689661 is an equidigital number, since it uses as much as digits as its factorization.

5689661 is an odious number, because the sum of its binary digits is odd.

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

The square root of 5689661 is about 2385.3010292204. The cubic root of 5689661 is about 178.5235291871.

The spelling of 5689661 in words is "five million, six hundred eighty-nine thousand, six hundred sixty-one".