355665 has 16 divisors (see below), whose sum is σ = 576576. Its totient is φ = 187200.

The previous prime is 355651. The next prime is 355669. The reversal of 355665 is 566553.

It is not a de Polignac number, because 355665 - 2⁵ = 355633 is a prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 355665.

It is not an unprimeable number, because it can be changed into a prime (355669) 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, 1875 + ... + 2055.

It is an arithmetic number, because the mean of its divisors is an integer number (36036).

2³⁵⁵⁶⁶⁵ is an apocalyptic number.

It is an amenable number.

355665 is a deficient number, since it is larger than the sum of its proper divisors (220911).

355665 is a wasteful number, since it uses less digits than its factorization.

355665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320.

The product of its digits is 13500, while the sum is 30.

The square root of 355665 is about 596.3765588955. The cubic root of 355665 is about 70.8511727463.

The spelling of 355665 in words is "three hundred fifty-five thousand, six hundred sixty-five".