617690868 has 24 divisors (see below), whose sum is σ = 1450827840. Its totient is φ = 204532800.

The previous prime is 617690867. The next prime is 617690881. The reversal of 617690868 is 868096716.

It is a happy number.

617690868 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 617690868.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (617690861) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 168633 + ... + 172256.

It is an arithmetic number, because the mean of its divisors is an integer number (60451160).

Almost surely, 2^617690868 is an apocalyptic number.

It is an amenable number.

617690868 is an abundant number, since it is smaller than the sum of its proper divisors (833136972).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

617690868 is a wasteful number, since it uses less digits than its factorization.

617690868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 341047 (or 341045 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 51.

The square root of 617690868 is about 24853.3874552343. The cubic root of 617690868 is about 851.6419785626.

The spelling of 617690868 in words is "six hundred seventeen million, six hundred ninety thousand, eight hundred sixty-eight".