6986393 has 4 divisors (see below), whose sum is σ = 6991908. Its totient is φ = 6980880.

The previous prime is 6986389. The next prime is 6986401. The reversal of 6986393 is 3936896.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 2181529 + 4804864 = 1477^2 + 2192^2 .

It is a cyclic number.

It is not a de Polignac number, because 6986393 - 2² = 6986389 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6986323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 203 + ... + 3743.

It is an arithmetic number, because the mean of its divisors is an integer number (1747977).

Almost surely, 2^6986393 is an apocalyptic number.

It is an amenable number.

6986393 is a deficient number, since it is larger than the sum of its proper divisors (5515).

6986393 is a wasteful number, since it uses less digits than its factorization.

6986393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5514.

The product of its digits is 209952, while the sum is 44.

The square root of 6986393 is about 2643.1785789084. The cubic root of 6986393 is about 191.1690890460.

The spelling of 6986393 in words is "six million, nine hundred eighty-six thousand, three hundred ninety-three".