665095 has 8 divisors (see below), whose sum is σ = 840240. Its totient is φ = 504000.

The previous prime is 665089. The next prime is 665111. The reversal of 665095 is 590566.

It is a happy number.

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

It is not a de Polignac number, because 665095 - 2⁷ = 664967 is a prime.

It is a congruent number.

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, 3406 + ... + 3595.

It is an arithmetic number, because the mean of its divisors is an integer number (105030).

2⁶⁶⁵⁰⁹⁵ is an apocalyptic number.

665095 is a deficient number, since it is larger than the sum of its proper divisors (175145).

665095 is a wasteful number, since it uses less digits than its factorization.

665095 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7025.

The product of its (nonzero) digits is 8100, while the sum is 31.

The square root of 665095 is about 815.5335676721. The cubic root of 665095 is about 87.2893435914.

Subtracting from 665095 its reverse (590566), we obtain a square (74529 = 273²).

The spelling of 665095 in words is "six hundred sixty-five thousand, ninety-five".