6600669967 has 4 divisors (see below), whose sum is σ = 6601346536. Its totient is φ = 6599993400.

The previous prime is 6600669953. The next prime is 6600670007. The reversal of 6600669967 is 7699660066.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 6600669967 - 2¹¹ = 6600667919 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6600669167) 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, 323433 + ... + 343234.

It is an arithmetic number, because the mean of its divisors is an integer number (1650336634).

Almost surely, 2^6600669967 is an apocalyptic number.

6600669967 is a deficient number, since it is larger than the sum of its proper divisors (676569).

6600669967 is an equidigital number, since it uses as much as digits as its factorization.

6600669967 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 676568.

The product of its (nonzero) digits is 4408992, while the sum is 55.

The square root of 6600669967 is about 81244.5073035710. The cubic root of 6600669967 is about 1875.8409233706.

The spelling of 6600669967 in words is "six billion, six hundred million, six hundred sixty-nine thousand, nine hundred sixty-seven".