6840613 has 12 divisors (see below), whose sum is σ = 7846308. Its totient is φ = 5940480.

The previous prime is 6840583. The next prime is 6840619. The reversal of 6840613 is 3160486.

It can be written as a sum of positive squares in 6 ways, for example, as 2316484 + 4524129 = 1522^2 + 2127^2 .

It is not a de Polignac number, because 6840613 - 2¹³ = 6832421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6840619) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1683 + ... + 4063.

It is an arithmetic number, because the mean of its divisors is an integer number (653859).

Almost surely, 2^6840613 is an apocalyptic number.

It is an amenable number.

6840613 is a deficient number, since it is larger than the sum of its proper divisors (1005695).

6840613 is a wasteful number, since it uses less digits than its factorization.

6840613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2424 (or 2411 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 6840613 is about 2615.4565567029. The cubic root of 6840613 is about 189.8300696713.

The spelling of 6840613 in words is "six million, eight hundred forty thousand, six hundred thirteen".