6426531 has 12 divisors (see below), whose sum is σ = 9369360. Its totient is φ = 4244400.

The previous prime is 6426523. The next prime is 6426557. The reversal of 6426531 is 1356246.

6426531 is a `hidden beast` number, since 6 + 4 + 2 + 653 + 1 = 666.

It is not a de Polignac number, because 6426531 - 2³ = 6426523 is a prime.

It is a super-2 number, since 2×6426531² = 82600601387922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 6426495 and 6426504.

It is not an unprimeable number, because it can be changed into a prime (6426631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2295 + ... + 4256.

It is an arithmetic number, because the mean of its divisors is an integer number (780780).

Almost surely, 2^6426531 is an apocalyptic number.

6426531 is a deficient number, since it is larger than the sum of its proper divisors (2942829).

6426531 is a wasteful number, since it uses less digits than its factorization.

6426531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6666 (or 6663 counting only the distinct ones).

The product of its digits is 4320, while the sum is 27.

The square root of 6426531 is about 2535.0603543111. The cubic root of 6426531 is about 185.9197537991.

The spelling of 6426531 in words is "six million, four hundred twenty-six thousand, five hundred thirty-one".