617966 has 8 divisors (see below), whose sum is σ = 942840. Its totient is φ = 303688.

The previous prime is 617963. The next prime is 617971. The reversal of 617966 is 669716.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (617963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2501 + ... + 2736.

It is an arithmetic number, because the mean of its divisors is an integer number (117855).

2⁶¹⁷⁹⁶⁶ is an apocalyptic number.

617966 is a deficient number, since it is larger than the sum of its proper divisors (324874).

617966 is a wasteful number, since it uses less digits than its factorization.

617966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5298.

The product of its digits is 13608, while the sum is 35.

The square root of 617966 is about 786.1081350552. The cubic root of 617966 is about 85.1768405978.

The spelling of 617966 in words is "six hundred seventeen thousand, nine hundred sixty-six".