6668885534 has 4 divisors (see below), whose sum is σ = 10003328304. Its totient is φ = 3334442766.

The previous prime is 6668885533. The next prime is 6668885539. The reversal of 6668885534 is 4355888666.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6668885533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1667221382 + ... + 1667221385.

It is an arithmetic number, because the mean of its divisors is an integer number (2500832076).

Almost surely, 2^6668885534 is an apocalyptic number.

6668885534 is a deficient number, since it is larger than the sum of its proper divisors (3334442770).

6668885534 is a wasteful number, since it uses less digits than its factorization.

6668885534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3334442769.

The product of its digits is 33177600, while the sum is 59.

The square root of 6668885534 is about 81663.2446942932. The cubic root of 6668885534 is about 1882.2808380114.

The spelling of 6668885534 in words is "six billion, six hundred sixty-eight million, eight hundred eighty-five thousand, five hundred thirty-four".