164485565 has 16 divisors (see below), whose sum is σ = 209373120. Its totient is φ = 123701760.

The previous prime is 164485537. The next prime is 164485567. The reversal of 164485565 is 565584461.

It is not a de Polignac number, because 164485565 - 2⁶ = 164485501 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164485567) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5837 + ... + 19053.

It is an arithmetic number, because the mean of its divisors is an integer number (13085820).

Almost surely, 2^164485565 is an apocalyptic number.

It is an amenable number.

164485565 is a deficient number, since it is larger than the sum of its proper divisors (44887555).

164485565 is a wasteful number, since it uses less digits than its factorization.

164485565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13372.

The product of its digits is 576000, while the sum is 44.

The square root of 164485565 is about 12825.1925911465. The cubic root of 164485565 is about 547.9100463731.

The spelling of 164485565 in words is "one hundred sixty-four million, four hundred eighty-five thousand, five hundred sixty-five".