20084661 has 12 divisors (see below), whose sum is σ = 29205280. Its totient is φ = 13300200.

The previous prime is 20084639. The next prime is 20084663. The reversal of 20084661 is 16648002.

It is not a de Polignac number, because 20084661 - 2⁹ = 20084149 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20084663) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6031 + ... + 8748.

Almost surely, 2^20084661 is an apocalyptic number.

It is an amenable number.

20084661 is a deficient number, since it is larger than the sum of its proper divisors (9120619).

20084661 is a wasteful number, since it uses less digits than its factorization.

20084661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14936 (or 14933 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 20084661 is about 4481.5913468321. The cubic root of 20084661 is about 271.8242313447.

The spelling of 20084661 in words is "twenty million, eighty-four thousand, six hundred sixty-one".