6666884038 has 4 divisors (see below), whose sum is σ = 10000326060. Its totient is φ = 3333442018.

The previous prime is 6666883973. The next prime is 6666884039. The reversal of 6666884038 is 8304886666.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8304886666 = 2 ⋅4152443333.

It is a super-2 number, since 2×6666884038² = 88894685552278370888, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 6666884038.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6666884039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1666721008 + ... + 1666721011.

It is an arithmetic number, because the mean of its divisors is an integer number (2500081515).

Almost surely, 2^6666884038 is an apocalyptic number.

6666884038 is a deficient number, since it is larger than the sum of its proper divisors (3333442022).

6666884038 is a wasteful number, since it uses less digits than its factorization.

6666884038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3333442021.

The product of its (nonzero) digits is 7962624, while the sum is 55.

The square root of 6666884038 is about 81650.9892040507. The cubic root of 6666884038 is about 1882.0925129654.

The spelling of 6666884038 in words is "six billion, six hundred sixty-six million, eight hundred eighty-four thousand, thirty-eight".