164506605 has 16 divisors (see below), whose sum is σ = 269332800. Its totient is φ = 85696128.

The previous prime is 164506591. The next prime is 164506607. The reversal of 164506605 is 506605461.

It is not a de Polignac number, because 164506605 - 2¹³ = 164498413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164506607) 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, 126880 + ... + 128169.

It is an arithmetic number, because the mean of its divisors is an integer number (16833300).

Almost surely, 2^164506605 is an apocalyptic number.

164506605 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

164506605 is a deficient number, since it is larger than the sum of its proper divisors (104826195).

164506605 is a wasteful number, since it uses less digits than its factorization.

164506605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255100.

The product of its (nonzero) digits is 21600, while the sum is 33.

The square root of 164506605 is about 12826.0128255043. The cubic root of 164506605 is about 547.9334071583.

The spelling of 164506605 in words is "one hundred sixty-four million, five hundred six thousand, six hundred five".