866958485 has 4 divisors (see below), whose sum is σ = 1040350188. Its totient is φ = 693566784.

The previous prime is 866958479. The next prime is 866958511. The reversal of 866958485 is 584859668.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 670706404 + 196252081 = 25898^2 + 14009^2 .

It is a cyclic number.

It is not a de Polignac number, because 866958485 - 2¹⁰ = 866957461 is a prime.

It is a Duffinian number.

It is a Curzon number.

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 3 ways as a sum of consecutive naturals, for example, 86695844 + ... + 86695853.

It is an arithmetic number, because the mean of its divisors is an integer number (260087547).

Almost surely, 2^866958485 is an apocalyptic number.

It is an amenable number.

866958485 is a deficient number, since it is larger than the sum of its proper divisors (173391703).

866958485 is a wasteful number, since it uses less digits than its factorization.

866958485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173391702.

The product of its digits is 16588800, while the sum is 59.

The square root of 866958485 is about 29444.1587585721. The cubic root of 866958485 is about 953.5264997131.

The spelling of 866958485 in words is "eight hundred sixty-six million, nine hundred fifty-eight thousand, four hundred eighty-five".