6868993 has 4 divisors (see below), whose sum is σ = 6874560. Its totient is φ = 6863428.

The previous prime is 6868991. The next prime is 6868999. The reversal of 6868993 is 3998686.

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 a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 3998686 = 2 ⋅1999343.

It is a cyclic number.

It is not a de Polignac number, because 6868993 - 2¹ = 6868991 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6868991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13 + ... + 3706.

It is an arithmetic number, because the mean of its divisors is an integer number (1718640).

It is a Proth number, since it is equal to 1677 ⋅ 2¹² + 1 and 1677 < 2¹².

Almost surely, 2^6868993 is an apocalyptic number.

It is an amenable number.

6868993 is a deficient number, since it is larger than the sum of its proper divisors (5567).

6868993 is a wasteful number, since it uses less digits than its factorization.

6868993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5566.

The product of its digits is 559872, while the sum is 49.

The square root of 6868993 is about 2620.8763801446. The cubic root of 6868993 is about 190.0922266937.

The spelling of 6868993 in words is "six million, eight hundred sixty-eight thousand, nine hundred ninety-three".