6566242726 has 4 divisors (see below), whose sum is σ = 9849364092. Its totient is φ = 3283121362.

The previous prime is 6566242681. The next prime is 6566242747. The reversal of 6566242726 is 6272426656.

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

It is a super-2 number, since 2×6566242726² = 86231087073495822152, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1641560680 + ... + 1641560683.

It is an arithmetic number, because the mean of its divisors is an integer number (2462341023).

Almost surely, 2^6566242726 is an apocalyptic number.

6566242726 is a deficient number, since it is larger than the sum of its proper divisors (3283121366).

6566242726 is a wasteful number, since it uses less digits than its factorization.

6566242726 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3283121365.

The product of its digits is 1451520, while the sum is 46.

The square root of 6566242726 is about 81032.3560437434. The cubic root of 6566242726 is about 1872.5739503998.

The spelling of 6566242726 in words is "six billion, five hundred sixty-six million, two hundred forty-two thousand, seven hundred twenty-six".