2001167065 has 8 divisors (see below), whose sum is σ = 2409074568. Its totient is φ = 1595817600.

The previous prime is 2001167017. The next prime is 2001167107. The reversal of 2001167065 is 5607611002.

It can be written as a sum of positive squares in 4 ways, for example, as 16999129 + 1984167936 = 4123^2 + 44544^2 .

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

It is not a de Polignac number, because 2001167065 - 2⁹ = 2001166553 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 637786 + ... + 640915.

It is an arithmetic number, because the mean of its divisors is an integer number (301134321).

Almost surely, 2^2001167065 is an apocalyptic number.

It is an amenable number.

2001167065 is a deficient number, since it is larger than the sum of its proper divisors (407907503).

2001167065 is a wasteful number, since it uses less digits than its factorization.

2001167065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1279019.

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 2001167065 is about 44734.4058304120. The cubic root of 2001167065 is about 1260.1660705352.

Adding to 2001167065 its reverse (5607611002), we get a palindrome (7608778067).

The spelling of 2001167065 in words is "two billion, one million, one hundred sixty-seven thousand, sixty-five".