916917685 has 8 divisors (see below), whose sum is σ = 1100577240. Its totient is φ = 733350144.

The previous prime is 916917653. The next prime is 916917697. The reversal of 916917685 is 586719619.

It can be written as a sum of positive squares in 4 ways, for example, as 8678916 + 908238769 = 2946^2 + 30137^2 .

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 916917685 - 2⁵ = 916917653 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1249 + ... + 42841.

It is an arithmetic number, because the mean of its divisors is an integer number (137572155).

Almost surely, 2^916917685 is an apocalyptic number.

It is an amenable number.

916917685 is a deficient number, since it is larger than the sum of its proper divisors (183659555).

916917685 is a wasteful number, since it uses less digits than its factorization.

916917685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46007.

The product of its digits is 816480, while the sum is 52.

The square root of 916917685 is about 30280.6486885602. The cubic root of 916917685 is about 971.5014424193.

The spelling of 916917685 in words is "nine hundred sixteen million, nine hundred seventeen thousand, six hundred eighty-five".