6868513 has 4 divisors (see below), whose sum is σ = 7167168. Its totient is φ = 6569860.

The previous prime is 6868507. The next prime is 6868517. The reversal of 6868513 is 3158686.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3158686 = 2 ⋅1579343.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6868513 is a prime.

6868513 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (6868517) 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, 149293 + ... + 149338.

It is an arithmetic number, because the mean of its divisors is an integer number (1791792).

Almost surely, 2^6868513 is an apocalyptic number.

It is an amenable number.

6868513 is a deficient number, since it is larger than the sum of its proper divisors (298655).

6868513 is a wasteful number, since it uses less digits than its factorization.

6868513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298654.

The product of its digits is 34560, while the sum is 37.

The square root of 6868513 is about 2620.7848061220. The cubic root of 6868513 is about 190.0877987572.

It can be divided in two parts, 6868 and 513, that added together give a triangular number (7381 = T₁₂₁).

The spelling of 6868513 in words is "six million, eight hundred sixty-eight thousand, five hundred thirteen".