4685581 has 4 divisors (see below), whose sum is σ = 4794592. Its totient is φ = 4576572.

The previous prime is 4685579. The next prime is 4685623. The reversal of 4685581 is 1855864.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4685581 - 2¹ = 4685579 is a prime.

It is a super-2 number, since 2×4685581² = 43909338615122, which contains 22 as substring.

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 4685581.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4685531) 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, 54441 + ... + 54526.

It is an arithmetic number, because the mean of its divisors is an integer number (1198648).

Almost surely, 2^4685581 is an apocalyptic number.

It is an amenable number.

4685581 is a deficient number, since it is larger than the sum of its proper divisors (109011).

4685581 is a wasteful number, since it uses less digits than its factorization.

4685581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109010.

The product of its digits is 38400, while the sum is 37.

The square root of 4685581 is about 2164.6202900278. The cubic root of 4685581 is about 167.3353963263.

The spelling of 4685581 in words is "four million, six hundred eighty-five thousand, five hundred eighty-one".