66170001 has 8 divisors (see below), whose sum is σ = 93416544. Its totient is φ = 41518400.

The previous prime is 66169997. The next prime is 66170009. The reversal of 66170001 is 10007166.

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

It is a cyclic number.

It is not a de Polignac number, because 66170001 - 2² = 66169997 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 66170001.

It is not an unprimeable number, because it can be changed into a prime (66170009) 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, 648675 + ... + 648776.

It is an arithmetic number, because the mean of its divisors is an integer number (11677068).

Almost surely, 2^66170001 is an apocalyptic number.

It is an amenable number.

66170001 is a deficient number, since it is larger than the sum of its proper divisors (27246543).

66170001 is a wasteful number, since it uses less digits than its factorization.

66170001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1297471.

The product of its (nonzero) digits is 252, while the sum is 21.

The square root of 66170001 is about 8134.4945141047. The cubic root of 66170001 is about 404.4706817706.

Adding to 66170001 its reverse (10007166), we get a palindrome (76177167).

The spelling of 66170001 in words is "sixty-six million, one hundred seventy thousand, one".