4205661 has 8 divisors (see below), whose sum is σ = 5617920. Its totient is φ = 2798592.

The previous prime is 4205659. The next prime is 4205671. The reversal of 4205661 is 1665024.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 4205661 - 2¹ = 4205659 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4205611) 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, 1396 + ... + 3218.

It is an arithmetic number, because the mean of its divisors is an integer number (702240).

Almost surely, 2^4205661 is an apocalyptic number.

It is an amenable number.

4205661 is a deficient number, since it is larger than the sum of its proper divisors (1412259).

4205661 is a wasteful number, since it uses less digits than its factorization.

4205661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2595.

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

The square root of 4205661 is about 2050.7708306878. The cubic root of 4205661 is about 161.4153211027.

The spelling of 4205661 in words is "four million, two hundred five thousand, six hundred sixty-one".