164729727 has 16 divisors (see below), whose sum is σ = 247484160. Its totient is φ = 108271800.

The previous prime is 164729717. The next prime is 164729731. The reversal of 164729727 is 727927461.

It is not a de Polignac number, because 164729727 - 2⁸ = 164729471 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164729717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41049 + ... + 44882.

It is an arithmetic number, because the mean of its divisors is an integer number (15467760).

Almost surely, 2^164729727 is an apocalyptic number.

164729727 is a deficient number, since it is larger than the sum of its proper divisors (82754433).

164729727 is an equidigital number, since it uses as much as digits as its factorization.

164729727 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86011 (or 86005 counting only the distinct ones).

The product of its digits is 296352, while the sum is 45.

The square root of 164729727 is about 12834.7079047402. The cubic root of 164729727 is about 548.1810178179.

The spelling of 164729727 in words is "one hundred sixty-four million, seven hundred twenty-nine thousand, seven hundred twenty-seven".