6668087408 has 20 divisors (see below), whose sum is σ = 12920787600. Its totient is φ = 3333690624.

The previous prime is 6668087341. The next prime is 6668087417. The reversal of 6668087408 is 8047808666.

It is a happy number.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 6668087408.

It is a congruent number.

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, 203768 + ... + 234216.

It is an arithmetic number, because the mean of its divisors is an integer number (646039380).

Almost surely, 2^6668087408 is an apocalyptic number.

It is an amenable number.

6668087408 is a deficient number, since it is larger than the sum of its proper divisors (6252700192).

6668087408 is a wasteful number, since it uses less digits than its factorization.

6668087408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44144 (or 44138 counting only the distinct ones).

The product of its (nonzero) digits is 3096576, while the sum is 53.

The square root of 6668087408 is about 81658.3578576008. The cubic root of 6668087408 is about 1882.2057451440.

The spelling of 6668087408 in words is "six billion, six hundred sixty-eight million, eighty-seven thousand, four hundred eight".