985663487 has 4 divisors (see below), whose sum is σ = 998140320. Its totient is φ = 973186656.

The previous prime is 985663477. The next prime is 985663537. The reversal of 985663487 is 784366589.

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

It is a cyclic number.

It is not a de Polignac number, because 985663487 - 2⁶ = 985663423 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (985663457) by changing a digit.

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, 6238298 + ... + 6238455.

It is an arithmetic number, because the mean of its divisors is an integer number (249535080).

Almost surely, 2^985663487 is an apocalyptic number.

985663487 is a deficient number, since it is larger than the sum of its proper divisors (12476833).

985663487 is a wasteful number, since it uses less digits than its factorization.

985663487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12476832.

The product of its digits is 8709120, while the sum is 56.

The square root of 985663487 is about 31395.2781003768. The cubic root of 985663487 is about 995.1981413941.

The spelling of 985663487 in words is "nine hundred eighty-five million, six hundred sixty-three thousand, four hundred eighty-seven".