165700986 has 32 divisors (see below), whose sum is σ = 362017728. Its totient is φ = 50144640.

The previous prime is 165700981. The next prime is 165700987. The reversal of 165700986 is 689007561.

165700986 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×165700986² = 54913633522744392, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (165700981) 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, 70990 + ... + 73286.

It is an arithmetic number, because the mean of its divisors is an integer number (11313054).

Almost surely, 2^165700986 is an apocalyptic number.

165700986 is an abundant number, since it is smaller than the sum of its proper divisors (196316742).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

165700986 is a wasteful number, since it uses less digits than its factorization.

165700986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3406.

The product of its (nonzero) digits is 90720, while the sum is 42.

The square root of 165700986 is about 12872.4895028118. The cubic root of 165700986 is about 549.2562796291.

The spelling of 165700986 in words is "one hundred sixty-five million, seven hundred thousand, nine hundred eighty-six".