4665601 has 4 divisors (see below), whose sum is σ = 4679172. Its totient is φ = 4652032.

The previous prime is 4665553. The next prime is 4665653. The reversal of 4665601 is 1065664.

It is a Cunningham number, because it is equal to 2160²+1.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1893376 + 2772225 = 1376^2 + 1665^2 .

It is a cyclic number.

It is not a de Polignac number, because 4665601 - 2⁷ = 4665473 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 4665601.

It is not an unprimeable number, because it can be changed into a prime (4665301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6256 + ... + 6961.

It is an arithmetic number, because the mean of its divisors is an integer number (1169793).

Almost surely, 2^4665601 is an apocalyptic number.

It is an amenable number.

4665601 is a deficient number, since it is larger than the sum of its proper divisors (13571).

4665601 is a wasteful number, since it uses less digits than its factorization.

4665601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13570.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 4665601 is about 2160.0002314815. Note that the first 3 decimals coincide. The cubic root of 4665601 is about 167.0972099483.

Adding to 4665601 its product of nonzero digits (4320), we get a square (4669921 = 2161²).

Subtracting from 4665601 its product of nonzero digits (4320), we obtain a square (4661281 = 2159²).

The spelling of 4665601 in words is "four million, six hundred sixty-five thousand, six hundred one".