164542705 has 4 divisors (see below), whose sum is σ = 197451252. Its totient is φ = 131634160.

The previous prime is 164542691. The next prime is 164542733. The reversal of 164542705 is 507245461.

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

It can be written as a sum of positive squares in 2 ways, for example, as 35129329 + 129413376 = 5927^2 + 11376^2 .

It is not a de Polignac number, because 164542705 - 2⁵ = 164542673 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16454266 + ... + 16454275.

It is an arithmetic number, because the mean of its divisors is an integer number (49362813).

Almost surely, 2^164542705 is an apocalyptic number.

It is an amenable number.

164542705 is a deficient number, since it is larger than the sum of its proper divisors (32908547).

164542705 is an equidigital number, since it uses as much as digits as its factorization.

164542705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32908546.

The product of its (nonzero) digits is 33600, while the sum is 34.

The square root of 164542705 is about 12827.4200445764. The cubic root of 164542705 is about 547.9734844737.

The spelling of 164542705 in words is "one hundred sixty-four million, five hundred forty-two thousand, seven hundred five".