6840387611 has 8 divisors (see below), whose sum is σ = 7153290144. Its totient is φ = 6528776320.

The previous prime is 6840387571. The next prime is 6840387629. The reversal of 6840387611 is 1167830486.

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

It is not a de Polignac number, because 6840387611 - 2²² = 6836193307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6840387511) 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, 311966 + ... + 333171.

It is an arithmetic number, because the mean of its divisors is an integer number (894161268).

Almost surely, 2^6840387611 is an apocalyptic number.

6840387611 is a deficient number, since it is larger than the sum of its proper divisors (312902533).

6840387611 is a wasteful number, since it uses less digits than its factorization.

6840387611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 645621.

The product of its (nonzero) digits is 193536, while the sum is 44.

The square root of 6840387611 is about 82706.6358341336. The cubic root of 6840387611 is about 1898.2798476660.

The spelling of 6840387611 in words is "six billion, eight hundred forty million, three hundred eighty-seven thousand, six hundred eleven".