6667406740 has 12 divisors (see below), whose sum is σ = 14001554196. Its totient is φ = 2666962688.

The previous prime is 6667406729. The next prime is 6667406741. The reversal of 6667406740 is 476047666.

It can be written as a sum of positive squares in 2 ways, for example, as 4625632144 + 2041774596 = 68012^2 + 45186^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6667406741) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 166685149 + ... + 166685188.

It is an arithmetic number, because the mean of its divisors is an integer number (1166796183).

Almost surely, 2^6667406740 is an apocalyptic number.

It is an amenable number.

6667406740 is an abundant number, since it is smaller than the sum of its proper divisors (7334147456).

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

6667406740 is a wasteful number, since it uses less digits than its factorization.

6667406740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333370346 (or 333370344 counting only the distinct ones).

The product of its (nonzero) digits is 1016064, while the sum is 46.

The square root of 6667406740 is about 81654.1899721012. The cubic root of 6667406740 is about 1882.1416987522.

The spelling of 6667406740 in words is "six billion, six hundred sixty-seven million, four hundred six thousand, seven hundred forty".