605660665 has 8 divisors (see below), whose sum is σ = 739111680. Its totient is φ = 476315952.

The previous prime is 605660647. The next prime is 605660681. The reversal of 605660665 is 566066506.

It is a happy number.

605660665 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 605660665 - 2⁷ = 605660537 is a prime.

It is a super-2 number, since 2×605660665² = 733649682256484450, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1026249 + ... + 1026838.

It is an arithmetic number, because the mean of its divisors is an integer number (92388960).

Almost surely, 2^605660665 is an apocalyptic number.

It is an amenable number.

605660665 is a deficient number, since it is larger than the sum of its proper divisors (133451015).

605660665 is a wasteful number, since it uses less digits than its factorization.

605660665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2053151.

The product of its (nonzero) digits is 194400, while the sum is 40.

The square root of 605660665 is about 24610.1740140130. The cubic root of 605660665 is about 846.0768060830.

The spelling of 605660665 in words is "six hundred five million, six hundred sixty thousand, six hundred sixty-five".