6426981 has 12 divisors (see below), whose sum is σ = 10127520. Its totient is φ = 3895080.

The previous prime is 6426971. The next prime is 6426983. The reversal of 6426981 is 1896246.

6426981 is a `hidden beast` number, since 642 + 6 + 9 + 8 + 1 = 666.

It is not a de Polignac number, because 6426981 - 2⁷ = 6426853 is a prime.

It is a super-2 number, since 2×6426981² = 82612169548722, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6426983) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32361 + ... + 32558.

It is an arithmetic number, because the mean of its divisors is an integer number (843960).

Almost surely, 2^6426981 is an apocalyptic number.

It is an amenable number.

6426981 is a deficient number, since it is larger than the sum of its proper divisors (3700539).

6426981 is a wasteful number, since it uses less digits than its factorization.

6426981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64936 (or 64933 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The square root of 6426981 is about 2535.1491080408. The cubic root of 6426981 is about 185.9240932028.

The spelling of 6426981 in words is "six million, four hundred twenty-six thousand, nine hundred eighty-one".