6853222781 has 8 divisors (see below), whose sum is σ = 6873310080. Its totient is φ = 6833164672.

The previous prime is 6853222759. The next prime is 6853222787. The reversal of 6853222781 is 1872223586.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6853222781 is a prime.

It is a super-2 number, since 2×6853222781² = 93933324972034747922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6853222787) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 516476 + ... + 529578.

It is an arithmetic number, because the mean of its divisors is an integer number (859163760).

Almost surely, 2^6853222781 is an apocalyptic number.

It is an amenable number.

6853222781 is a deficient number, since it is larger than the sum of its proper divisors (20087299).

6853222781 is a wasteful number, since it uses less digits than its factorization.

6853222781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14595.

The product of its digits is 322560, while the sum is 44.

The square root of 6853222781 is about 82784.1940288120. The cubic root of 6853222781 is about 1899.4664042680.

The spelling of 6853222781 in words is "six billion, eight hundred fifty-three million, two hundred twenty-two thousand, seven hundred eighty-one".