6318889 has 2 divisors, whose sum is σ = 6318890. Its totient is φ = 6318888.

The previous prime is 6318881. The next prime is 6318901. The reversal of 6318889 is 9888136.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6051600 + 267289 = 2460^2 + 517^2 .

It is a cyclic number.

It is not a de Polignac number, because 6318889 - 2³ = 6318881 is a prime.

It is not a weakly prime, because it can be changed into another prime (6318881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3159444 + 3159445.

It is an arithmetic number, because the mean of its divisors is an integer number (3159445).

Almost surely, 2^6318889 is an apocalyptic number.

It is an amenable number.

6318889 is a deficient number, since it is larger than the sum of its proper divisors (1).

6318889 is an equidigital number, since it uses as much as digits as its factorization.

6318889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 82944, while the sum is 43.

The square root of 6318889 is about 2513.7400422478. The cubic root of 6318889 is about 184.8758748576.

The spelling of 6318889 in words is "six million, three hundred eighteen thousand, eight hundred eighty-nine".