6668578850 has 12 divisors (see below), whose sum is σ = 12403556754. Its totient is φ = 2667431520.

The previous prime is 6668578841. The next prime is 6668578859. The reversal of 6668578850 is 588758666.

It is an interprime number because it is at equal distance from previous prime (6668578841) and next prime (6668578859).

It can be written as a sum of positive squares in 3 ways, for example, as 2564510881 + 4104067969 = 50641^2 + 64063^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 6668578850.

It is not an unprimeable number, because it can be changed into a prime (6668578859) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 66685739 + ... + 66685838.

Almost surely, 2^6668578850 is an apocalyptic number.

6668578850 is a deficient number, since it is larger than the sum of its proper divisors (5734977904).

6668578850 is a wasteful number, since it uses less digits than its factorization.

6668578850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133371589 (or 133371584 counting only the distinct ones).

The product of its (nonzero) digits is 19353600, while the sum is 59.

The square root of 6668578850 is about 81661.3669368815. The cubic root of 6668578850 is about 1882.2519839016.

The spelling of 6668578850 in words is "six billion, six hundred sixty-eight million, five hundred seventy-eight thousand, eight hundred fifty".