2089661 has 8 divisors (see below), whose sum is σ = 2406720. Its totient is φ = 1777248.

The previous prime is 2089651. The next prime is 2089669. The reversal of 2089661 is 1669802.

2089661 = 49² + 50² + ... + 185².

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 2089661 - 2¹⁴ = 2073277 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 (2089669) 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, 131 + ... + 2048.

It is an arithmetic number, because the mean of its divisors is an integer number (300840).

2^2089661 is an apocalyptic number.

It is an amenable number.

2089661 is a deficient number, since it is larger than the sum of its proper divisors (317059).

2089661 is a wasteful number, since it uses less digits than its factorization.

2089661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2323.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 2089661 is about 1445.5659791237. The cubic root of 2089661 is about 127.8474133912.

The spelling of 2089661 in words is "two million, eighty-nine thousand, six hundred sixty-one".