665135365 has 8 divisors (see below), whose sum is σ = 808266240. Its totient is φ = 525372432.

The previous prime is 665135363. The next prime is 665135371. The reversal of 665135365 is 563531566.

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 665135365 - 2¹ = 665135363 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (665135363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 841549 + ... + 842338.

It is an arithmetic number, because the mean of its divisors is an integer number (101033280).

Almost surely, 2^665135365 is an apocalyptic number.

It is an amenable number.

665135365 is a deficient number, since it is larger than the sum of its proper divisors (143130875).

665135365 is a wasteful number, since it uses less digits than its factorization.

665135365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1683971.

The product of its digits is 243000, while the sum is 40.

The square root of 665135365 is about 25790.2183976794. The cubic root of 665135365 is about 872.9110943596.

The spelling of 665135365 in words is "six hundred sixty-five million, one hundred thirty-five thousand, three hundred sixty-five".