164686460 has 24 divisors (see below), whose sum is σ = 346647840. Its totient is φ = 65721024.

The previous prime is 164686453. The next prime is 164686499. The reversal of 164686460 is 64686461.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 599 + ... + 18158.

It is an arithmetic number, because the mean of its divisors is an integer number (14443660).

Almost surely, 2^164686460 is an apocalyptic number.

164686460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

164686460 is an abundant number, since it is smaller than the sum of its proper divisors (181961380).

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

164686460 is a wasteful number, since it uses less digits than its factorization.

164686460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19205 (or 19203 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 41.

The square root of 164686460 is about 12833.0222473118. The cubic root of 164686460 is about 548.1330195495.

Subtracting from 164686460 its reverse (64686461), we obtain a palindrome (99999999).

The spelling of 164686460 in words is "one hundred sixty-four million, six hundred eighty-six thousand, four hundred sixty".