6661017 has 24 divisors (see below), whose sum is σ = 10677888. Its totient is φ = 3967200.

The previous prime is 6661013. The next prime is 6661021. The reversal of 6661017 is 7101666.

It is an interprime number because it is at equal distance from previous prime (6661013) and next prime (6661021).

It is not a de Polignac number, because 6661017 - 2² = 6661013 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6661013) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5488 + ... + 6590.

It is an arithmetic number, because the mean of its divisors is an integer number (444912).

Almost surely, 2^6661017 is an apocalyptic number.

It is an amenable number.

6661017 is a deficient number, since it is larger than the sum of its proper divisors (4016871).

6661017 is a wasteful number, since it uses less digits than its factorization.

6661017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1181 (or 1178 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 6661017 is about 2580.8946123389. The cubic root of 6661017 is about 188.1540253519.

The spelling of 6661017 in words is "six million, six hundred sixty-one thousand, seventeen".