986316643 has 4 divisors (see below), whose sum is σ = 1062187168. Its totient is φ = 910446120.

The previous prime is 986316641. The next prime is 986316649. The reversal of 986316643 is 346613689.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 346613689 = 97 ⋅3573337.

It is a cyclic number.

It is not a de Polignac number, because 986316643 - 2¹ = 986316641 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 986316593 and 986316602.

It is not an unprimeable number, because it can be changed into a prime (986316641) 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, 37935243 + ... + 37935268.

It is an arithmetic number, because the mean of its divisors is an integer number (265546792).

Almost surely, 2^986316643 is an apocalyptic number.

986316643 is a deficient number, since it is larger than the sum of its proper divisors (75870525).

986316643 is a wasteful number, since it uses less digits than its factorization.

986316643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75870524.

The product of its digits is 559872, while the sum is 46.

The square root of 986316643 is about 31405.6785151985. The cubic root of 986316643 is about 995.4179175884.

The spelling of 986316643 in words is "nine hundred eighty-six million, three hundred sixteen thousand, six hundred forty-three".