6840760661 has 8 divisors (see below), whose sum is σ = 8008695744. Its totient is φ = 5720496480.

The previous prime is 6840760621. The next prime is 6840760673. The reversal of 6840760661 is 1660670486.

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-6840760661 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6840760621) 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, 11917415 + ... + 11917988.

It is an arithmetic number, because the mean of its divisors is an integer number (1001086968).

Almost surely, 2^6840760661 is an apocalyptic number.

It is an amenable number.

6840760661 is a deficient number, since it is larger than the sum of its proper divisors (1167935083).

6840760661 is a wasteful number, since it uses less digits than its factorization.

6840760661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23835451.

The product of its (nonzero) digits is 290304, while the sum is 44.

The square root of 6840760661 is about 82708.8910637786. The cubic root of 6840760661 is about 1898.3143554778.

The spelling of 6840760661 in words is "six billion, eight hundred forty million, seven hundred sixty thousand, six hundred sixty-one".