6396786 has 64 divisors (see below), whose sum is σ = 15811200. Its totient is φ = 1916640.

The previous prime is 6396773. The next prime is 6396799. The reversal of 6396786 is 6876936.

6396786 is a `hidden beast` number, since 639 + 6 + 7 + 8 + 6 = 666.

It is an interprime number because it is at equal distance from previous prime (6396773) and next prime (6396799).

It is a super-2 number, since 2×6396786² = 81837742259592, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 71830 + ... + 71918.

It is an arithmetic number, because the mean of its divisors is an integer number (247050).

Almost surely, 2^6396786 is an apocalyptic number.

6396786 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 6396786, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7905600).

6396786 is an abundant number, since it is smaller than the sum of its proper divisors (9414414).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6396786 is a wasteful number, since it uses less digits than its factorization.

6396786 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133 (or 105 counting only the distinct ones).

The product of its digits is 326592, while the sum is 45.

The square root of 6396786 is about 2529.1868258395. The cubic root of 6396786 is about 185.6324688353.

The spelling of 6396786 in words is "six million, three hundred ninety-six thousand, seven hundred eighty-six".