164514645 has 24 divisors (see below), whose sum is σ = 295722336. Its totient is φ = 87740496.

The previous prime is 164514641. The next prime is 164514677. The reversal of 164514645 is 546415461.

164514645 is a `hidden beast` number, since 1 + 6 + 4 + 5 + 1 + 4 + 645 = 666.

It is not a de Polignac number, because 164514645 - 2² = 164514641 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164514641) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 66487 + ... + 68916.

It is an arithmetic number, because the mean of its divisors is an integer number (12321764).

Almost surely, 2^164514645 is an apocalyptic number.

164514645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

164514645 is a deficient number, since it is larger than the sum of its proper divisors (131207691).

164514645 is an equidigital number, since it uses as much as digits as its factorization.

164514645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135423 (or 135411 counting only the distinct ones).

The product of its digits is 57600, while the sum is 36.

The square root of 164514645 is about 12826.3262472151. The cubic root of 164514645 is about 547.9423334723.

It can be divided in two parts, 1645 and 14645, that added together give a triangular number (16290 = T₁₈₀).

The spelling of 164514645 in words is "one hundred sixty-four million, five hundred fourteen thousand, six hundred forty-five".