164065547 has 4 divisors (see below), whose sum is σ = 169358016. Its totient is φ = 158773080.

The previous prime is 164065543. The next prime is 164065549. The reversal of 164065547 is 745560461.

164065547 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 745560461 = 73 ⋅10213157.

It is a cyclic number.

It is not a de Polignac number, because 164065547 - 2² = 164065543 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 164065547.

It is not an unprimeable number, because it can be changed into a prime (164065543) 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, 2646188 + ... + 2646249.

It is an arithmetic number, because the mean of its divisors is an integer number (42339504).

Almost surely, 2^164065547 is an apocalyptic number.

164065547 is a deficient number, since it is larger than the sum of its proper divisors (5292469).

164065547 is an equidigital number, since it uses as much as digits as its factorization.

164065547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5292468.

The product of its (nonzero) digits is 100800, while the sum is 38.

The square root of 164065547 is about 12808.8073995981. The cubic root of 164065547 is about 547.4432815177.

The spelling of 164065547 in words is "one hundred sixty-four million, sixty-five thousand, five hundred forty-seven".