6668146854 has 32 divisors (see below), whose sum is σ = 14970879840. Its totient is φ = 2199799296.

The previous prime is 6668146801. The next prime is 6668146873. The reversal of 6668146854 is 4586418666.

It is a Harshad number since it is a multiple of its sum of digits (54).

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 6668146854.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 631279 + ... + 641754.

It is an arithmetic number, because the mean of its divisors is an integer number (467839995).

Almost surely, 2^6668146854 is an apocalyptic number.

6668146854 is an abundant number, since it is smaller than the sum of its proper divisors (8302732986).

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

6668146854 is a wasteful number, since it uses less digits than its factorization.

6668146854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1273141 (or 1273135 counting only the distinct ones).

The product of its digits is 6635520, while the sum is 54.

The square root of 6668146854 is about 81658.7218489244. The cubic root of 6668146854 is about 1882.2113384155.

The spelling of 6668146854 in words is "six billion, six hundred sixty-eight million, one hundred forty-six thousand, eight hundred fifty-four".