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5666789 is a prime number
BaseRepresentation
bin10101100111011111100101
3101122220101002
4111213133211
52422314124
6321243045
766111152
oct25473745
911586332
105666789
1132205a7
121a93485
13123543b
14a77229
1576e0ae
hex5677e5

5666789 has 2 divisors, whose sum is σ = 5666790. Its totient is φ = 5666788.

The previous prime is 5666783. The next prime is 5666819. The reversal of 5666789 is 9876665.

5666789 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4972900 + 693889 = 2230^2 + 833^2 .

It is a cyclic number.

It is not a de Polignac number, because 5666789 - 220 = 4618213 is a prime.

It is a super-2 number, since 2×56667892 = 64224995141042, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a plaindrome in base 10.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5666783) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2833394 + 2833395.

It is an arithmetic number, because the mean of its divisors is an integer number (2833395).

Almost surely, 25666789 is an apocalyptic number.

It is an amenable number.

5666789 is a deficient number, since it is larger than the sum of its proper divisors (1).

5666789 is an equidigital number, since it uses as much as digits as its factorization.

5666789 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 544320, while the sum is 47.

The square root of 5666789 is about 2380.5018378485. The cubic root of 5666789 is about 178.2839909684.

The spelling of 5666789 in words is "five million, six hundred sixty-six thousand, seven hundred eighty-nine".