422765 has 16 divisors (see below), whose sum is σ = 594432. Its totient is φ = 282624.

The previous prime is 422761. The next prime is 422789. The reversal of 422765 is 567224.

It is a cyclic number.

It is not a de Polignac number, because 422765 - 2² = 422761 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422761) 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, 1517 + ... + 1773.

It is an arithmetic number, because the mean of its divisors is an integer number (37152).

2⁴²²⁷⁶⁵ is an apocalyptic number.

It is an amenable number.

422765 is a deficient number, since it is larger than the sum of its proper divisors (171667).

422765 is a wasteful number, since it uses less digits than its factorization.

422765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316.

The product of its digits is 3360, while the sum is 26.

The square root of 422765 is about 650.2038141998. The cubic root of 422765 is about 75.0527036963.

Adding to 422765 its reverse (567224), we get a palindrome (989989).

The spelling of 422765 in words is "four hundred twenty-two thousand, seven hundred sixty-five".