4487665 has 24 divisors (see below), whose sum is σ = 6751080. Its totient is φ = 2838528.

The previous prime is 4487627. The next prime is 4487671. The reversal of 4487665 is 5667844.

It can be written as a sum of positive squares in 4 ways, for example, as 194481 + 4293184 = 441^2 + 2072^2 .

It is not a de Polignac number, because 4487665 - 2⁷ = 4487537 is a prime.

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2481 + ... + 3889.

It is an arithmetic number, because the mean of its divisors is an integer number (281295).

Almost surely, 2^4487665 is an apocalyptic number.

It is an amenable number.

4487665 is a deficient number, since it is larger than the sum of its proper divisors (2263415).

4487665 is a wasteful number, since it uses less digits than its factorization.

4487665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1441 (or 1434 counting only the distinct ones).

The product of its digits is 161280, while the sum is 40.

The square root of 4487665 is about 2118.4109610744. The cubic root of 4487665 is about 164.9453752452.

The spelling of 4487665 in words is "four million, four hundred eighty-seven thousand, six hundred sixty-five".