4065557 has 8 divisors (see below), whose sum is σ = 4220160. Its totient is φ = 3912480.

The previous prime is 4065541. The next prime is 4065569. The reversal of 4065557 is 7555604.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4065557 - 2⁴ = 4065541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4065517) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9494 + ... + 9912.

It is an arithmetic number, because the mean of its divisors is an integer number (527520).

Almost surely, 2^4065557 is an apocalyptic number.

It is an amenable number.

4065557 is a deficient number, since it is larger than the sum of its proper divisors (154603).

4065557 is a wasteful number, since it uses less digits than its factorization.

4065557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 763.

The product of its (nonzero) digits is 21000, while the sum is 32.

The square root of 4065557 is about 2016.3226428327. The cubic root of 4065557 is about 159.6026206482.

The spelling of 4065557 in words is "four million, sixty-five thousand, five hundred fifty-seven".