164223657 has 24 divisors (see below), whose sum is σ = 266570304. Its totient is φ = 96665184.

The previous prime is 164223629. The next prime is 164223673. The reversal of 164223657 is 756322461.

164223657 is a `hidden beast` number, since 1 + 642 + 2 + 3 + 6 + 5 + 7 = 666.

It is not a de Polignac number, because 164223657 - 2⁸ = 164223401 is a prime.

It is not an unprimeable number, because it can be changed into a prime (164223617) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27823 + ... + 33204.

It is an arithmetic number, because the mean of its divisors is an integer number (11107096).

Almost surely, 2^164223657 is an apocalyptic number.

It is an amenable number.

164223657 is a deficient number, since it is larger than the sum of its proper divisors (102346647).

164223657 is a wasteful number, since it uses less digits than its factorization.

164223657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61069 (or 61066 counting only the distinct ones).

The product of its digits is 60480, while the sum is 36.

The square root of 164223657 is about 12814.9778384514. The cubic root of 164223657 is about 547.6190821228.

The spelling of 164223657 in words is "one hundred sixty-four million, two hundred twenty-three thousand, six hundred fifty-seven".