6861617 has 12 divisors (see below), whose sum is σ = 8029476. Its totient is φ = 5846400.

The previous prime is 6861601. The next prime is 6861623. The reversal of 6861617 is 7161686.

It can be written as a sum of positive squares in 2 ways, for example, as 3625216 + 3236401 = 1904^2 + 1799^2 .

It is not a de Polignac number, because 6861617 - 2⁴ = 6861601 is a prime.

6861617 is a modest number, since divided by 1617 gives 686 as remainder.

It is not an unprimeable number, because it can be changed into a prime (6861697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11117 + ... + 11717.

It is an arithmetic number, because the mean of its divisors is an integer number (669123).

Almost surely, 2^6861617 is an apocalyptic number.

It is an amenable number.

6861617 is a deficient number, since it is larger than the sum of its proper divisors (1167859).

6861617 is a wasteful number, since it uses less digits than its factorization.

6861617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 848 (or 841 counting only the distinct ones).

The product of its digits is 12096, while the sum is 35.

The square root of 6861617 is about 2619.4688392878. The cubic root of 6861617 is about 190.0241612857.

The spelling of 6861617 in words is "six million, eight hundred sixty-one thousand, six hundred seventeen".