6827090981 has 4 divisors (see below), whose sum is σ = 6923247264. Its totient is φ = 6730934700.

The previous prime is 6827090947. The next prime is 6827091017. The reversal of 6827090981 is 1890907286.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6827090981 is a prime.

It is a super-2 number, since 2×6827090981² = 93218342525703084722, 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 (6827090681) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48078035 + ... + 48078176.

It is an arithmetic number, because the mean of its divisors is an integer number (1730811816).

Almost surely, 2^6827090981 is an apocalyptic number.

It is an amenable number.

6827090981 is a deficient number, since it is larger than the sum of its proper divisors (96156283).

6827090981 is an equidigital number, since it uses as much as digits as its factorization.

6827090981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96156282.

The product of its (nonzero) digits is 435456, while the sum is 50.

The square root of 6827090981 is about 82626.2124328593. The cubic root of 6827090981 is about 1897.0490647266.

The spelling of 6827090981 in words is "six billion, eight hundred twenty-seven million, ninety thousand, nine hundred eighty-one".