4565661 has 8 divisors (see below), whose sum is σ = 6352320. Its totient is φ = 2911392.

The previous prime is 4565653. The next prime is 4565663. The reversal of 4565661 is 1665654.

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

It is not a de Polignac number, because 4565661 - 2³ = 4565653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4565663) 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, 33016 + ... + 33153.

It is an arithmetic number, because the mean of its divisors is an integer number (794040).

Almost surely, 2^4565661 is an apocalyptic number.

It is an amenable number.

4565661 is a deficient number, since it is larger than the sum of its proper divisors (1786659).

4565661 is a wasteful number, since it uses less digits than its factorization.

4565661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66195.

The product of its digits is 21600, while the sum is 33.

The square root of 4565661 is about 2136.7407423457. The cubic root of 4565661 is about 165.8954802439.

The spelling of 4565661 in words is "four million, five hundred sixty-five thousand, six hundred sixty-one".