495665 has 4 divisors (see below), whose sum is σ = 594804. Its totient is φ = 396528.

The previous prime is 495647. The next prime is 495667. The reversal of 495665 is 566594.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 183184 + 312481 = 428^2 + 559^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-495665 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (495667) 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, 49562 + ... + 49571.

It is an arithmetic number, because the mean of its divisors is an integer number (148701).

2⁴⁹⁵⁶⁶⁵ is an apocalyptic number.

It is an amenable number.

495665 is a deficient number, since it is larger than the sum of its proper divisors (99139).

495665 is an equidigital number, since it uses as much as digits as its factorization.

495665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99138.

The product of its digits is 32400, while the sum is 35.

The square root of 495665 is about 704.0348002762. The cubic root of 495665 is about 79.1400070282.

The spelling of 495665 in words is "four hundred ninety-five thousand, six hundred sixty-five".