6724727818 has 4 divisors (see below), whose sum is σ = 10087091730. Its totient is φ = 3362363908.

The previous prime is 6724727797. The next prime is 6724727861. The reversal of 6724727818 is 8187274276.

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

It can be written as a sum of positive squares in only one way, i.e., 3399706249 + 3325021569 = 58307^2 + 57663^2 .

It is a super-2 number, since 2×6724727818² = 90443928452366082248, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1681181953 + ... + 1681181956.

Almost surely, 2^6724727818 is an apocalyptic number.

6724727818 is a deficient number, since it is larger than the sum of its proper divisors (3362363912).

6724727818 is a wasteful number, since it uses less digits than its factorization.

6724727818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3362363911.

The product of its digits is 2107392, while the sum is 52.

The square root of 6724727818 is about 82004.4377945487. The cubic root of 6724727818 is about 1887.5200359729.

The spelling of 6724727818 in words is "six billion, seven hundred twenty-four million, seven hundred twenty-seven thousand, eight hundred eighteen".