6666940734 has 8 divisors (see below), whose sum is σ = 13333881480. Its totient is φ = 2222313576.

The previous prime is 6666940727. The next prime is 6666940757. The reversal of 6666940734 is 4370496666.

It is a sphenic number, since it is the product of 3 distinct primes.

6666940734 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 555578389 + ... + 555578400.

It is an arithmetic number, because the mean of its divisors is an integer number (1666735185).

Almost surely, 2^6666940734 is an apocalyptic number.

6666940734 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

6666940734 is a wasteful number, since it uses less digits than its factorization.

6666940734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1111156794.

The product of its (nonzero) digits is 3919104, while the sum is 51.

The square root of 6666940734 is about 81651.3363883286. The cubic root of 6666940734 is about 1882.0978481321.

The spelling of 6666940734 in words is "six billion, six hundred sixty-six million, nine hundred forty thousand, seven hundred thirty-four".