865970001 has 16 divisors (see below), whose sum is σ = 1381605120. Its totient is φ = 532904400.

The previous prime is 865969967. The next prime is 865970009. The reversal of 865970001 is 100079568.

It is not a de Polignac number, because 865970001 - 2¹⁰ = 865968977 is a prime.

It is not an unprimeable number, because it can be changed into a prime (865970009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1233225 + ... + 1233926.

It is an arithmetic number, because the mean of its divisors is an integer number (86350320).

Almost surely, 2^865970001 is an apocalyptic number.

It is an amenable number.

865970001 is a deficient number, since it is larger than the sum of its proper divisors (515635119).

865970001 is a wasteful number, since it uses less digits than its factorization.

865970001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2467173 (or 2467167 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 36.

The square root of 865970001 is about 29427.3682309513. The cubic root of 865970001 is about 953.1639663453.

The spelling of 865970001 in words is "eight hundred sixty-five million, nine hundred seventy thousand, one".