6681286 has 8 divisors (see below), whose sum is σ = 10211184. Its totient is φ = 3277560.

The previous prime is 6681239. The next prime is 6681287. The reversal of 6681286 is 6821866.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×6681286² = 89279165227592, which contains 22 as substring.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6681287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31410 + ... + 31621.

It is an arithmetic number, because the mean of its divisors is an integer number (1276398).

Almost surely, 2^6681286 is an apocalyptic number.

6681286 is a deficient number, since it is larger than the sum of its proper divisors (3529898).

6681286 is a wasteful number, since it uses less digits than its factorization.

6681286 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63086.

The product of its digits is 27648, while the sum is 37.

The square root of 6681286 is about 2584.8183688608. The cubic root of 6681286 is about 188.3446785310.

The spelling of 6681286 in words is "six million, six hundred eighty-one thousand, two hundred eighty-six".