4243661 has 8 divisors (see below), whose sum is σ = 4449984. Its totient is φ = 4039200.

The previous prime is 4243649. The next prime is 4243667. The reversal of 4243661 is 1663424.

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 4243661 - 2⁶ = 4243597 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4243661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4243667) 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, 6761 + ... + 7361.

It is an arithmetic number, because the mean of its divisors is an integer number (556248).

Almost surely, 2^4243661 is an apocalyptic number.

It is an amenable number.

4243661 is a deficient number, since it is larger than the sum of its proper divisors (206323).

4243661 is a wasteful number, since it uses less digits than its factorization.

4243661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 931.

The product of its digits is 3456, while the sum is 26.

The square root of 4243661 is about 2060.0148057720. The cubic root of 4243661 is about 161.9000170535.

The spelling of 4243661 in words is "four million, two hundred forty-three thousand, six hundred sixty-one".