4380565 has 16 divisors (see below), whose sum is σ = 6043392. Its totient is φ = 2985984.

The previous prime is 4380559. The next prime is 4380589. The reversal of 4380565 is 5650834.

It is a 6-Lehmer number, since φ(4380565) divides (4380565-1)⁶.

It is a cyclic number.

It is not a de Polignac number, because 4380565 - 2⁷ = 4380437 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8752 + ... + 9238.

It is an arithmetic number, because the mean of its divisors is an integer number (377712).

Almost surely, 2^4380565 is an apocalyptic number.

It is an amenable number.

4380565 is a deficient number, since it is larger than the sum of its proper divisors (1662827).

4380565 is a wasteful number, since it uses less digits than its factorization.

4380565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 756.

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 4380565 is about 2092.9799330142. The cubic root of 4380565 is about 163.6226327330.

It can be divided in two parts, 43 and 80565, that added together give a palindrome (80608).

The spelling of 4380565 in words is "four million, three hundred eighty thousand, five hundred sixty-five".