164961686 has 32 divisors (see below), whose sum is σ = 272160000. Its totient is φ = 74686752.

The previous prime is 164961683. The next prime is 164961691. The reversal of 164961686 is 686169461.

164961686 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 164961686.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164961683) 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, 117215 + ... + 118613.

It is an arithmetic number, because the mean of its divisors is an integer number (8505000).

Almost surely, 2^164961686 is an apocalyptic number.

164961686 is a deficient number, since it is larger than the sum of its proper divisors (107198314).

164961686 is a wasteful number, since it uses less digits than its factorization.

164961686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1556.

The product of its digits is 373248, while the sum is 47.

The square root of 164961686 is about 12843.7411216514. The cubic root of 164961686 is about 548.4381984461.

The spelling of 164961686 in words is "one hundred sixty-four million, nine hundred sixty-one thousand, six hundred eighty-six".