4200665 has 16 divisors (see below), whose sum is σ = 5795712. Its totient is φ = 2863104.

The previous prime is 4200661. The next prime is 4200671. The reversal of 4200665 is 5660024.

It is a cyclic number.

It is not a de Polignac number, because 4200665 - 2² = 4200661 is a prime.

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 4200665.

It is not an unprimeable number, because it can be changed into a prime (4200661) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8762 + ... + 9228.

It is an arithmetic number, because the mean of its divisors is an integer number (362232).

Almost surely, 2^4200665 is an apocalyptic number.

It is an amenable number.

4200665 is a deficient number, since it is larger than the sum of its proper divisors (1595047).

4200665 is a wasteful number, since it uses less digits than its factorization.

4200665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 736.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 4200665 is about 2049.5523901574. The cubic root of 4200665 is about 161.3513794709.

Adding to 4200665 its reverse (5660024), we get a palindrome (9860689).

The spelling of 4200665 in words is "four million, two hundred thousand, six hundred sixty-five".