6666670673 has 8 divisors (see below), whose sum is σ = 7193279016. Its totient is φ = 6142032000.

The previous prime is 6666670613. The next prime is 6666670709. The reversal of 6666670673 is 3760766666.

It can be written as a sum of positive squares in 4 ways, for example, as 23931664 + 6642739009 = 4892^2 + 81503^2 .

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

It is not a de Polignac number, because 6666670673 - 2⁶ = 6666670609 is a prime.

It is a super-3 number, since 3×6666670673³ (a number of 30 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6666670613) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 485378 + ... + 498923.

It is an arithmetic number, because the mean of its divisors is an integer number (899159877).

Almost surely, 2^6666670673 is an apocalyptic number.

It is an amenable number.

6666670673 is a deficient number, since it is larger than the sum of its proper divisors (526608343).

6666670673 is a wasteful number, since it uses less digits than its factorization.

6666670673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 984835.

The product of its (nonzero) digits is 6858432, while the sum is 53.

The square root of 6666670673 is about 81649.6826264499. The cubic root of 6666670673 is about 1882.0724347724.

The spelling of 6666670673 in words is "six billion, six hundred sixty-six million, six hundred seventy thousand, six hundred seventy-three".