985770217 has 4 divisors (see below), whose sum is σ = 1037652880. Its totient is φ = 933887556.

The previous prime is 985770193. The next prime is 985770239. The reversal of 985770217 is 712077589.

985770217 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 985770217 - 2¹⁵ = 985737449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (985770287) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25941303 + ... + 25941340.

It is an arithmetic number, because the mean of its divisors is an integer number (259413220).

Almost surely, 2^985770217 is an apocalyptic number.

It is an amenable number.

985770217 is a deficient number, since it is larger than the sum of its proper divisors (51882663).

985770217 is a wasteful number, since it uses less digits than its factorization.

985770217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51882662.

The product of its (nonzero) digits is 246960, while the sum is 46.

The square root of 985770217 is about 31396.9778322691. The cubic root of 985770217 is about 995.2340609094.

The spelling of 985770217 in words is "nine hundred eighty-five million, seven hundred seventy thousand, two hundred seventeen".