4785661 has 4 divisors (see below), whose sum is σ = 4851292. Its totient is φ = 4720032.

The previous prime is 4785659. The next prime is 4785673. The reversal of 4785661 is 1665874.

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 3080025 + 1705636 = 1755^2 + 1306^2 .

It is a cyclic number.

It is not a de Polignac number, because 4785661 - 2¹ = 4785659 is a prime.

It is a Duffinian number.

4785661 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 4785661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4785601) 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, 32706 + ... + 32851.

It is an arithmetic number, because the mean of its divisors is an integer number (1212823).

Almost surely, 2^4785661 is an apocalyptic number.

It is an amenable number.

4785661 is a deficient number, since it is larger than the sum of its proper divisors (65631).

4785661 is an equidigital number, since it uses as much as digits as its factorization.

4785661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65630.

The product of its digits is 40320, while the sum is 37.

The square root of 4785661 is about 2187.6153683863. The cubic root of 4785661 is about 168.5183935636.

The spelling of 4785661 in words is "four million, seven hundred eighty-five thousand, six hundred sixty-one".