4004661 has 8 divisors (see below), whose sum is σ = 5357664. Its totient is φ = 2660720.

The previous prime is 4004659. The next prime is 4004669. The reversal of 4004661 is 1664004.

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 4004661 - 2¹ = 4004659 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4004669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1155 + ... + 3056.

It is an arithmetic number, because the mean of its divisors is an integer number (669708).

Almost surely, 2^4004661 is an apocalyptic number.

It is an amenable number.

4004661 is a deficient number, since it is larger than the sum of its proper divisors (1353003).

4004661 is a wasteful number, since it uses less digits than its factorization.

4004661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4531.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 4004661 is about 2001.1649107457. The cubic root of 4004661 is about 158.8017385661.

Adding to 4004661 its reverse (1664004), we get a palindrome (5668665).

The spelling of 4004661 in words is "four million, four thousand, six hundred sixty-one".