608665 has 16 divisors (see below), whose sum is σ = 792000. Its totient is φ = 447552.

The previous prime is 608659. The next prime is 608669. The reversal of 608665 is 566806.

608665 = T₅ + T₆ + ... + T₁₅₃.

It is a cyclic number.

It is not a de Polignac number, because 608665 - 2⁵ = 608633 is a prime.

It is not an unprimeable number, because it can be changed into a prime (608669) 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, 4011 + ... + 4159.

It is an arithmetic number, because the mean of its divisors is an integer number (49500).

2⁶⁰⁸⁶⁶⁵ is an apocalyptic number.

It is an amenable number.

608665 is a deficient number, since it is larger than the sum of its proper divisors (183335).

608665 is a wasteful number, since it uses less digits than its factorization.

608665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 608665 is about 780.1698533012. The cubic root of 608665 is about 84.7473466450.

The spelling of 608665 in words is "six hundred eight thousand, six hundred sixty-five".