6566738 has 8 divisors (see below), whose sum is σ = 9860988. Its totient is φ = 3279744.

The previous prime is 6566713. The next prime is 6566741. The reversal of 6566738 is 8376656.

It can be written as a sum of positive squares in 2 ways, for example, as 4355569 + 2211169 = 2087^2 + 1487^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 6566695 and 6566704.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2570 + ... + 4442.

Almost surely, 2^6566738 is an apocalyptic number.

6566738 is a deficient number, since it is larger than the sum of its proper divisors (3294250).

6566738 is a wasteful number, since it uses less digits than its factorization.

6566738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3628.

The product of its digits is 181440, while the sum is 41.

The square root of 6566738 is about 2562.5647308897. The cubic root of 6566738 is about 187.2621030286.

The spelling of 6566738 in words is "six million, five hundred sixty-six thousand, seven hundred thirty-eight".