2406561 has 16 divisors (see below), whose sum is σ = 3356160. Its totient is φ = 1532160.

The previous prime is 2406557. The next prime is 2406583. The reversal of 2406561 is 1656042.

It is not a de Polignac number, because 2406561 - 2² = 2406557 is a prime.

2406561 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2406161) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10395 + ... + 10623.

It is an arithmetic number, because the mean of its divisors is an integer number (209760).

2^2406561 is an apocalyptic number.

It is an amenable number.

2406561 is a deficient number, since it is larger than the sum of its proper divisors (949599).

2406561 is a wasteful number, since it uses less digits than its factorization.

2406561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 376.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 2406561 is about 1551.3094468867. The cubic root of 2406561 is about 134.0084831638.

The spelling of 2406561 in words is "two million, four hundred six thousand, five hundred sixty-one".