6669561301 has 8 divisors (see below), whose sum is σ = 7222733280. Its totient is φ = 6122122032.

The previous prime is 6669561289. The next prime is 6669561319. The reversal of 6669561301 is 1031659666.

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

It is not a de Polignac number, because 6669561301 - 2²¹ = 6667464149 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 (6669561341) 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, 1430755 + ... + 1435408.

It is an arithmetic number, because the mean of its divisors is an integer number (902841660).

Almost surely, 2^6669561301 is an apocalyptic number.

It is an amenable number.

6669561301 is a deficient number, since it is larger than the sum of its proper divisors (553171979).

6669561301 is a wasteful number, since it uses less digits than its factorization.

6669561301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2866355.

The product of its (nonzero) digits is 174960, while the sum is 43.

The square root of 6669561301 is about 81667.3821118321. The cubic root of 6669561301 is about 1882.3444138671.

The spelling of 6669561301 in words is "six billion, six hundred sixty-nine million, five hundred sixty-one thousand, three hundred one".