164187727 has 8 divisors (see below), whose sum is σ = 179591040. Its totient is φ = 148863960.

The previous prime is 164187707. The next prime is 164187743. The reversal of 164187727 is 727781461.

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

It is a cyclic number.

It is not a de Polignac number, because 164187727 - 2²⁷ = 29969999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164187707) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15523 + ... + 23860.

It is an arithmetic number, because the mean of its divisors is an integer number (22448880).

Almost surely, 2^164187727 is an apocalyptic number.

164187727 is a deficient number, since it is larger than the sum of its proper divisors (15403313).

164187727 is a wasteful number, since it uses less digits than its factorization.

164187727 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39773.

The product of its digits is 131712, while the sum is 43.

The square root of 164187727 is about 12813.5758865353. The cubic root of 164187727 is about 547.5791418992.

The spelling of 164187727 in words is "one hundred sixty-four million, one hundred eighty-seven thousand, seven hundred twenty-seven".