6863391 has 6 divisors (see below), whose sum is σ = 9913800. Its totient is φ = 4575588.

The previous prime is 6863383. The next prime is 6863419. The reversal of 6863391 is 1933686.

It is a happy number.

It is not a de Polignac number, because 6863391 - 2³ = 6863383 is a prime.

It is a super-2 number, since 2×6863391² = 94212272037762, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6863371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 381291 + ... + 381308.

It is an arithmetic number, because the mean of its divisors is an integer number (1652300).

Almost surely, 2^6863391 is an apocalyptic number.

6863391 is a deficient number, since it is larger than the sum of its proper divisors (3050409).

6863391 is a wasteful number, since it uses less digits than its factorization.

6863391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 762605 (or 762602 counting only the distinct ones).

The product of its digits is 23328, while the sum is 36.

The square root of 6863391 is about 2619.8074356716. The cubic root of 6863391 is about 190.0405361341.

The spelling of 6863391 in words is "six million, eight hundred sixty-three thousand, three hundred ninety-one".