6613958868 has 96 divisors (see below), whose sum is σ = 18092325888. Its totient is φ = 1858137600.

The previous prime is 6613958839. The next prime is 6613958891. The reversal of 6613958868 is 8688593166.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 128353 + ... + 172343.

It is an arithmetic number, because the mean of its divisors is an integer number (188461728).

Almost surely, 2^6613958868 is an apocalyptic number.

6613958868 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6613958868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9046162944).

6613958868 is an abundant number, since it is smaller than the sum of its proper divisors (11478367020).

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

6613958868 is a wasteful number, since it uses less digits than its factorization.

6613958868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44093 (or 44091 counting only the distinct ones).

The product of its digits is 14929920, while the sum is 60.

The square root of 6613958868 is about 81326.2495631023. The cubic root of 6613958868 is about 1877.0989347710.

The spelling of 6613958868 in words is "six billion, six hundred thirteen million, nine hundred fifty-eight thousand, eight hundred sixty-eight".