5681899 has 2 divisors, whose sum is σ = 5681900. Its totient is φ = 5681898.

The previous prime is 5681869. The next prime is 5681911. The reversal of 5681899 is 9981865.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5681899 is a prime.

It is a Chen prime.

5681899 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (5681869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2840949 + 2840950.

It is an arithmetic number, because the mean of its divisors is an integer number (2840950).

Almost surely, 2^5681899 is an apocalyptic number.

5681899 is a deficient number, since it is larger than the sum of its proper divisors (1).

5681899 is an equidigital number, since it uses as much as digits as its factorization.

5681899 is an evil number, because the sum of its binary digits is even.

The product of its digits is 155520, while the sum is 46.

The square root of 5681899 is about 2383.6734256185. The cubic root of 5681899 is about 178.4423099224.

The spelling of 5681899 in words is "five million, six hundred eighty-one thousand, eight hundred ninety-nine".