6986849 has 2 divisors, whose sum is σ = 6986850. Its totient is φ = 6986848.

The previous prime is 6986807. The next prime is 6986869. The reversal of 6986849 is 9486896.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4231249 + 2755600 = 2057^2 + 1660^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6986849 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6986797 and 6986806.

It is not a weakly prime, because it can be changed into another prime (6986869) 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 as a sum of consecutive naturals, namely, 3493424 + 3493425.

It is an arithmetic number, because the mean of its divisors is an integer number (3493425).

Almost surely, 2^6986849 is an apocalyptic number.

It is an amenable number.

6986849 is a deficient number, since it is larger than the sum of its proper divisors (1).

6986849 is an equidigital number, since it uses as much as digits as its factorization.

6986849 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 746496, while the sum is 50.

The square root of 6986849 is about 2643.2648372798. The cubic root of 6986849 is about 191.1732481406.

The spelling of 6986849 in words is "six million, nine hundred eighty-six thousand, eight hundred forty-nine".