986706981 has 16 divisors (see below), whose sum is σ = 1574233920. Its totient is φ = 607204080.

The previous prime is 986706961. The next prime is 986706983. The reversal of 986706981 is 189607689.

It is not a de Polignac number, because 986706981 - 2¹¹ = 986704933 is a prime.

It is a super-2 number, since 2×986706981² = 1947181332708268722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (986706983) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1405215 + ... + 1405916.

It is an arithmetic number, because the mean of its divisors is an integer number (98389620).

Almost surely, 2^986706981 is an apocalyptic number.

It is an amenable number.

986706981 is a deficient number, since it is larger than the sum of its proper divisors (587526939).

986706981 is a wasteful number, since it uses less digits than its factorization.

986706981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2811153 (or 2811147 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 54.

The square root of 986706981 is about 31411.8923498728. The cubic root of 986706981 is about 995.5492135560.

The spelling of 986706981 in words is "nine hundred eighty-six million, seven hundred six thousand, nine hundred eighty-one".