6817591148 has 12 divisors (see below), whose sum is σ = 11990739600. Its totient is φ = 3391665552.

The previous prime is 6817591139. The next prime is 6817591163. The reversal of 6817591148 is 8411957186.

It is a happy number.

It is a super-2 number, since 2×6817591148² = 92959098122575915808, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 6817591096 and 6817591105.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4281611 + ... + 4283202.

It is an arithmetic number, because the mean of its divisors is an integer number (999228300).

Almost surely, 2^6817591148 is an apocalyptic number.

It is an amenable number.

6817591148 is a deficient number, since it is larger than the sum of its proper divisors (5173148452).

6817591148 is a wasteful number, since it uses less digits than its factorization.

6817591148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8565016 (or 8565014 counting only the distinct ones).

The product of its digits is 483840, while the sum is 50.

The square root of 6817591148 is about 82568.7056214399. The cubic root of 6817591148 is about 1896.1687476285.

The spelling of 6817591148 in words is "six billion, eight hundred seventeen million, five hundred ninety-one thousand, one hundred forty-eight".