655710005 has 4 divisors (see below), whose sum is σ = 786852012. Its totient is φ = 524568000.

The previous prime is 655710001. The next prime is 655710031. The reversal of 655710005 is 500017556.

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 338228881 + 317481124 = 18391^2 + 17818^2 .

It is not a de Polignac number, because 655710005 - 2² = 655710001 is a prime.

It is a super-2 number, since 2×655710005² = 859911221314200050, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 655710005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (655710001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65570996 + ... + 65571005.

It is an arithmetic number, because the mean of its divisors is an integer number (196713003).

Almost surely, 2^655710005 is an apocalyptic number.

It is an amenable number.

655710005 is a deficient number, since it is larger than the sum of its proper divisors (131142007).

655710005 is a wasteful number, since it uses less digits than its factorization.

655710005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131142006.

The product of its (nonzero) digits is 5250, while the sum is 29.

The square root of 655710005 is about 25606.8351226777. The cubic root of 655710005 is about 868.7682419095.

It can be divided in two parts, 6557 and 10005, that multiplied together give a triangular number (65602785 = T₁₁₄₅₄).

The spelling of 655710005 in words is "six hundred fifty-five million, seven hundred ten thousand, five".