4183661 has 8 divisors (see below), whose sum is σ = 4295160. Its totient is φ = 4073472.

The previous prime is 4183651. The next prime is 4183687. The reversal of 4183661 is 1663814.

It can be written as a sum of positive squares in 4 ways, for example, as 1394761 + 2788900 = 1181^2 + 1670^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4183661 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 (4183651) 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, 10025 + ... + 10433.

It is an arithmetic number, because the mean of its divisors is an integer number (536895).

Almost surely, 2^4183661 is an apocalyptic number.

It is an amenable number.

4183661 is a deficient number, since it is larger than the sum of its proper divisors (111499).

4183661 is a wasteful number, since it uses less digits than its factorization.

4183661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 655.

The product of its digits is 3456, while the sum is 29.

The square root of 4183661 is about 2045.3999608878. The cubic root of 4183661 is about 161.1333719890.

The spelling of 4183661 in words is "four million, one hundred eighty-three thousand, six hundred sixty-one".