917968 has 10 divisors (see below), whose sum is σ = 1778594. Its totient is φ = 458976.

The previous prime is 917951. The next prime is 917971. The reversal of 917968 is 869719.

It can be written as a sum of positive squares in only one way, i.e., 906304 + 11664 = 952^2 + 108^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 917968.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28671 + ... + 28702.

2⁹¹⁷⁹⁶⁸ is an apocalyptic number.

It is an amenable number.

917968 is a deficient number, since it is larger than the sum of its proper divisors (860626).

917968 is a wasteful number, since it uses less digits than its factorization.

917968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57381 (or 57375 counting only the distinct ones).

The product of its digits is 27216, while the sum is 40.

The square root of 917968 is about 958.1064659003. The cubic root of 917968 is about 97.1872247488.

The spelling of 917968 in words is "nine hundred seventeen thousand, nine hundred sixty-eight".