6426566 has 4 divisors (see below), whose sum is σ = 9639852. Its totient is φ = 3213282.

The previous prime is 6426559. The next prime is 6426569. The reversal of 6426566 is 6656246.

It is a semiprime because it is the product of two primes.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6426569) 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 as a sum of consecutive naturals, namely, 1606640 + ... + 1606643.

It is an arithmetic number, because the mean of its divisors is an integer number (2409963).

Almost surely, 2^6426566 is an apocalyptic number.

6426566 is a deficient number, since it is larger than the sum of its proper divisors (3213286).

6426566 is a wasteful number, since it uses less digits than its factorization.

6426566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3213285.

The product of its digits is 51840, while the sum is 35.

The square root of 6426566 is about 2535.0672574904. The cubic root of 6426566 is about 185.9200913155.

The spelling of 6426566 in words is "six million, four hundred twenty-six thousand, five hundred sixty-six".