6868621158 has 48 divisors (see below), whose sum is σ = 15989742144. Its totient is φ = 1961274000.

The previous prime is 6868621139. The next prime is 6868621159. The reversal of 6868621158 is 8511268686.

It is a happy number.

It is a super-2 number, since 2×6868621158² = 94355913224250521928, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 6868621158.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6868621159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 554533 + ... + 566783.

It is an arithmetic number, because the mean of its divisors is an integer number (333119628).

Almost surely, 2^6868621158 is an apocalyptic number.

6868621158 is an abundant number, since it is smaller than the sum of its proper divisors (9121120986).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6868621158 is a wasteful number, since it uses less digits than its factorization.

6868621158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14177 (or 14170 counting only the distinct ones).

The product of its digits is 1105920, while the sum is 51.

The square root of 6868621158 is about 82877.1449677171. The cubic root of 6868621158 is about 1900.8879651848.

The spelling of 6868621158 in words is "six billion, eight hundred sixty-eight million, six hundred twenty-one thousand, one hundred fifty-eight".