6666065001 has 6 divisors (see below), whose sum is σ = 9628760570. Its totient is φ = 4444043328.

The previous prime is 6666064987. The next prime is 6666065039. The reversal of 6666065001 is 1005606666.

It can be written as a sum of positive squares in only one way, i.e., 5419904400 + 1246160601 = 73620^2 + 35301^2 .

It is a de Polignac number, because none of the positive numbers 2^k-6666065001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6666065701) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 370336936 + ... + 370336953.

Almost surely, 2^6666065001 is an apocalyptic number.

It is an amenable number.

6666065001 is a deficient number, since it is larger than the sum of its proper divisors (2962695569).

6666065001 is a wasteful number, since it uses less digits than its factorization.

6666065001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 740673895 (or 740673892 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The square root of 6666065001 is about 81645.9735749412. The cubic root of 6666065001 is about 1882.0154371517.

The spelling of 6666065001 in words is "six billion, six hundred sixty-six million, sixty-five thousand, one".