164505967 has 4 divisors (see below), whose sum is σ = 164872800. Its totient is φ = 164139136.

The previous prime is 164505949. The next prime is 164506037. The reversal of 164505967 is 769505461.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 164505967 - 2¹⁹ = 163981679 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164505947) 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, 182743 + ... + 183640.

It is an arithmetic number, because the mean of its divisors is an integer number (41218200).

Almost surely, 2^164505967 is an apocalyptic number.

164505967 is a deficient number, since it is larger than the sum of its proper divisors (366833).

164505967 is an equidigital number, since it uses as much as digits as its factorization.

164505967 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366832.

The product of its (nonzero) digits is 226800, while the sum is 43.

The square root of 164505967 is about 12825.9879541500. The cubic root of 164505967 is about 547.9326988140.

The spelling of 164505967 in words is "one hundred sixty-four million, five hundred five thousand, nine hundred sixty-seven".