655007165 has 4 divisors (see below), whose sum is σ = 786008604. Its totient is φ = 524005728.

The previous prime is 655007131. The next prime is 655007183. The reversal of 655007165 is 561700556.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 492928804 + 162078361 = 22202^2 + 12731^2 .

It is a cyclic number.

It is not a de Polignac number, because 655007165 - 2²⁰ = 653958589 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65500712 + ... + 65500721.

It is an arithmetic number, because the mean of its divisors is an integer number (196502151).

Almost surely, 2^655007165 is an apocalyptic number.

It is an amenable number.

655007165 is a deficient number, since it is larger than the sum of its proper divisors (131001439).

655007165 is a wasteful number, since it uses less digits than its factorization.

655007165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131001438.

The product of its (nonzero) digits is 31500, while the sum is 35.

The square root of 655007165 is about 25593.1077636148. The cubic root of 655007165 is about 868.4577269151.

The spelling of 655007165 in words is "six hundred fifty-five million, seven thousand, one hundred sixty-five".