2083661 has 4 divisors (see below), whose sum is σ = 2134524. Its totient is φ = 2032800.

The previous prime is 2083643. The next prime is 2083681. The reversal of 2083661 is 1663802.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1142761 + 940900 = 1069^2 + 970^2 .

It is a cyclic number.

It is not a de Polignac number, because 2083661 - 2¹⁴ = 2067277 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2083661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2083681) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25370 + ... + 25451.

It is an arithmetic number, because the mean of its divisors is an integer number (533631).

2^2083661 is an apocalyptic number.

It is an amenable number.

2083661 is a deficient number, since it is larger than the sum of its proper divisors (50863).

2083661 is an equidigital number, since it uses as much as digits as its factorization.

2083661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50862.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 2083661 is about 1443.4891755742. The cubic root of 2083661 is about 127.7249342228.

It can be divided in two parts, 2083 and 661, that added together give a cube (2744 = 14³).

The spelling of 2083661 in words is "two million, eighty-three thousand, six hundred sixty-one".