866202001 has 8 divisors (see below), whose sum is σ = 1042047680. Its totient is φ = 703381968.

The previous prime is 866201971. The next prime is 866202017. The reversal of 866202001 is 100202668.

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 866202001 - 2¹¹ = 866199953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (866202041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3256266 + ... + 3256531.

It is an arithmetic number, because the mean of its divisors is an integer number (130255960).

Almost surely, 2^866202001 is an apocalyptic number.

It is an amenable number.

866202001 is a deficient number, since it is larger than the sum of its proper divisors (175845679).

866202001 is a wasteful number, since it uses less digits than its factorization.

866202001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6512823.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 866202001 is about 29431.3098757089. The cubic root of 866202001 is about 953.2490787222.

Adding to 866202001 its reverse (100202668), we get a palindrome (966404669).

The spelling of 866202001 in words is "eight hundred sixty-six million, two hundred two thousand, one".