6840930605 has 18 divisors (see below), whose sum is σ = 8398166094. Its totient is φ = 5349497136.

The previous prime is 6840930589. The next prime is 6840930619. The reversal of 6840930605 is 5060390486.

It can be written as a sum of positive squares in only one way, i.e., 5472744484 + 1368186121 = 73978^2 + 36989^2 .

It is not a de Polignac number, because 6840930605 - 2⁴ = 6840930589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 8692022 + ... + 8692808.

It is an arithmetic number, because the mean of its divisors is an integer number (466564783).

Almost surely, 2^6840930605 is an apocalyptic number.

It is an amenable number.

6840930605 is a deficient number, since it is larger than the sum of its proper divisors (1557235489).

6840930605 is an frugal number, since it uses more digits than its factorization.

6840930605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1673 (or 839 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 41.

The square root of 6840930605 is about 82709.9184197397. The cubic root of 6840930605 is about 1898.3300751947.

The spelling of 6840930605 in words is "six billion, eight hundred forty million, nine hundred thirty thousand, six hundred five".