166986384 has 20 divisors (see below), whose sum is σ = 431381616. Its totient is φ = 55662112.

The previous prime is 166986353. The next prime is 166986389. The reversal of 166986384 is 483689661.

It is not an unprimeable number, because it can be changed into a prime (166986389) 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, 1739394 + ... + 1739489.

Almost surely, 2^166986384 is an apocalyptic number.

It is an amenable number.

166986384 is an abundant number, since it is smaller than the sum of its proper divisors (264395232).

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

166986384 is a wasteful number, since it uses less digits than its factorization.

166986384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3478894 (or 3478888 counting only the distinct ones).

The product of its digits is 1492992, while the sum is 51.

The square root of 166986384 is about 12922.3211537247. The cubic root of 166986384 is about 550.6728778334.

The spelling of 166986384 in words is "one hundred sixty-six million, nine hundred eighty-six thousand, three hundred eighty-four".