164691222 has 8 divisors (see below), whose sum is σ = 329382456. Its totient is φ = 54897072.

The previous prime is 164691211. The next prime is 164691227. The reversal of 164691222 is 222196461.

It is a sphenic number, since it is the product of 3 distinct primes.

164691222 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164691227) 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, 13724263 + ... + 13724274.

It is an arithmetic number, because the mean of its divisors is an integer number (41172807).

Almost surely, 2^164691222 is an apocalyptic number.

164691222 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

164691222 is a wasteful number, since it uses less digits than its factorization.

164691222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27448542.

The product of its digits is 10368, while the sum is 33.

The square root of 164691222 is about 12833.2077829356. The cubic root of 164691222 is about 548.1383026883.

The spelling of 164691222 in words is "one hundred sixty-four million, six hundred ninety-one thousand, two hundred twenty-two".