665795 has 8 divisors (see below), whose sum is σ = 860496. Its totient is φ = 491616.

The previous prime is 665789. The next prime is 665801. The reversal of 665795 is 597566.

It is an interprime number because it is at equal distance from previous prime (665789) and next prime (665801).

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 665795 - 2¹⁰ = 664771 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5057 + ... + 5186.

It is an arithmetic number, because the mean of its divisors is an integer number (107562).

2⁶⁶⁵⁷⁹⁵ is an apocalyptic number.

665795 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

665795 is a deficient number, since it is larger than the sum of its proper divisors (194701).

665795 is a wasteful number, since it uses less digits than its factorization.

665795 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10261.

The product of its digits is 56700, while the sum is 38.

The square root of 665795 is about 815.9626216929. The cubic root of 665795 is about 87.3199563193.

The spelling of 665795 in words is "six hundred sixty-five thousand, seven hundred ninety-five".