2007561 has 8 divisors (see below), whose sum is σ = 2686464. Its totient is φ = 1333520.

The previous prime is 2007557. The next prime is 2007589. The reversal of 2007561 is 1657002.

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 2007561 - 2² = 2007557 is a prime.

It is a super-3 number, since 3×2007561³ = 24273226333736098443, which contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (2007661) 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, 105 + ... + 2006.

It is an arithmetic number, because the mean of its divisors is an integer number (335808).

2^2007561 is an apocalyptic number.

It is an amenable number.

2007561 is a deficient number, since it is larger than the sum of its proper divisors (678903).

2007561 is a wasteful number, since it uses less digits than its factorization.

2007561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2431.

The product of its (nonzero) digits is 420, while the sum is 21.

The square root of 2007561 is about 1416.8842577995. The cubic root of 2007561 is about 126.1506763816.

The spelling of 2007561 in words is "two million, seven thousand, five hundred sixty-one".