6366859 has 2 divisors, whose sum is σ = 6366860. Its totient is φ = 6366858.

The previous prime is 6366827. The next prime is 6366869. The reversal of 6366859 is 9586636.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6366859 - 2⁵ = 6366827 is a prime.

It is a super-3 number, since 3×6366859³ (a number of 21 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (6366869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3183429 + 3183430.

It is an arithmetic number, because the mean of its divisors is an integer number (3183430).

Almost surely, 2^6366859 is an apocalyptic number.

6366859 is a deficient number, since it is larger than the sum of its proper divisors (1).

6366859 is an equidigital number, since it uses as much as digits as its factorization.

6366859 is an evil number, because the sum of its binary digits is even.

The product of its digits is 233280, while the sum is 43.

The square root of 6366859 is about 2523.2635613427. The cubic root of 6366859 is about 185.3425258827.

It can be divided in two parts, 6366 and 859, that added together give a square (7225 = 85²).

The spelling of 6366859 in words is "six million, three hundred sixty-six thousand, eight hundred fifty-nine".