2001277065 has 32 divisors (see below), whose sum is σ = 3230067456. Its totient is φ = 1058044160.

The previous prime is 2001277027. The next prime is 2001277067. The reversal of 2001277065 is 5607721002.

It is not a de Polignac number, because 2001277065 - 2²¹ = 1999179913 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2001277067) 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 31 ways as a sum of consecutive naturals, for example, 1153939 + ... + 1155671.

It is an arithmetic number, because the mean of its divisors is an integer number (100939608).

Almost surely, 2^2001277065 is an apocalyptic number.

It is an amenable number.

2001277065 is a deficient number, since it is larger than the sum of its proper divisors (1228790391).

2001277065 is a wasteful number, since it uses less digits than its factorization.

2001277065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2369.

The product of its (nonzero) digits is 5880, while the sum is 30.

The square root of 2001277065 is about 44735.6352922365. The cubic root of 2001277065 is about 1260.1891596833.

Adding to 2001277065 its reverse (5607721002), we get a palindrome (7608998067).

The spelling of 2001277065 in words is "two billion, one million, two hundred seventy-seven thousand, sixty-five".