665097 has 16 divisors (see below), whose sum is σ = 933120. Its totient is φ = 420992.

The previous prime is 665089. The next prime is 665111. The reversal of 665097 is 790566.

It is a cyclic number.

It is not a de Polignac number, because 665097 - 2³ = 665089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (665017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7429 + ... + 7517.

It is an arithmetic number, because the mean of its divisors is an integer number (58320).

2⁶⁶⁵⁰⁹⁷ is an apocalyptic number.

It is an amenable number.

665097 is a deficient number, since it is larger than the sum of its proper divisors (268023).

665097 is a wasteful number, since it uses less digits than its factorization.

665097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192.

The product of its (nonzero) digits is 11340, while the sum is 33.

The square root of 665097 is about 815.5347938623. The cubic root of 665097 is about 87.2894310870.

The spelling of 665097 in words is "six hundred sixty-five thousand, ninety-seven".