4085658 has 24 divisors (see below), whose sum is σ = 8999796. Its totient is φ = 1339560.

The previous prime is 4085657. The next prime is 4085659. The reversal of 4085658 is 8565804.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (4085657) and next prime (4085659).

It can be written as a sum of positive squares in 2 ways, for example, as 294849 + 3790809 = 543^2 + 1947^2 .

It is not an unprimeable number, because it can be changed into a prime (4085657) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 66948 + ... + 67008.

Almost surely, 2^4085658 is an apocalyptic number.

4085658 is an abundant number, since it is smaller than the sum of its proper divisors (4914138).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4085658 is an frugal number, since it uses more digits than its factorization.

4085658 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191 (or 66 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 36.

The square root of 4085658 is about 2021.3010661453. The cubic root of 4085658 is about 159.8652250467.

The spelling of 4085658 in words is "four million, eighty-five thousand, six hundred fifty-eight".