6670702081 has 4 divisors (see below), whose sum is σ = 6695500500. Its totient is φ = 6645903664.

The previous prime is 6670702079. The next prime is 6670702099. The reversal of 6670702081 is 1802070766.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3905625025 + 2765077056 = 62495^2 + 52584^2 .

It is a cyclic number.

It is not a de Polignac number, because 6670702081 - 2¹ = 6670702079 is a prime.

It is a super-2 number, since 2×6670702081² = 88996532506915461122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6670702081.

It is not an unprimeable number, because it can be changed into a prime (6670702021) 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, 12398806 + ... + 12399343.

It is an arithmetic number, because the mean of its divisors is an integer number (1673875125).

Almost surely, 2^6670702081 is an apocalyptic number.

It is an amenable number.

6670702081 is a deficient number, since it is larger than the sum of its proper divisors (24798419).

6670702081 is a wasteful number, since it uses less digits than its factorization.

6670702081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24798418.

The product of its (nonzero) digits is 28224, while the sum is 37.

The square root of 6670702081 is about 81674.3661193645. The cubic root of 6670702081 is about 1882.4517281939.

The spelling of 6670702081 in words is "six billion, six hundred seventy million, seven hundred two thousand, eighty-one".