6566742 has 96 divisors (see below), whose sum is σ = 18520320. Its totient is φ = 1632960.

The previous prime is 6566741. The next prime is 6566767. The reversal of 6566742 is 2476656.

It is a junction number, because it is equal to n+sod(n) for n = 6566697 and 6566706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6566741) 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 47 ways as a sum of consecutive naturals, for example, 31017 + ... + 31227.

It is an arithmetic number, because the mean of its divisors is an integer number (192920).

Almost surely, 2^6566742 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6566742, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9260160).

6566742 is an abundant number, since it is smaller than the sum of its proper divisors (11953578).

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

6566742 is a wasteful number, since it uses less digits than its factorization.

6566742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258 (or 255 counting only the distinct ones).

The product of its digits is 60480, while the sum is 36.

The square root of 6566742 is about 2562.5655113577. The cubic root of 6566742 is about 187.2621410509.

The spelling of 6566742 in words is "six million, five hundred sixty-six thousand, seven hundred forty-two".