2127661 has 4 divisors (see below), whose sum is σ = 2220192. Its totient is φ = 2035132.

The previous prime is 2127659. The next prime is 2127667. The reversal of 2127661 is 1667212.

2127661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 2127661 - 2¹ = 2127659 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2127667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46231 + ... + 46276.

It is an arithmetic number, because the mean of its divisors is an integer number (555048).

2^2127661 is an apocalyptic number.

It is an amenable number.

2127661 is a deficient number, since it is larger than the sum of its proper divisors (92531).

2127661 is an equidigital number, since it uses as much as digits as its factorization.

2127661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92530.

The product of its digits is 1008, while the sum is 25.

The square root of 2127661 is about 1458.6504036266. The cubic root of 2127661 is about 128.6177213077.

The spelling of 2127661 in words is "two million, one hundred twenty-seven thousand, six hundred sixty-one".