164670577 has 4 divisors (see below), whose sum is σ = 164730996. Its totient is φ = 164610160.

The previous prime is 164670557. The next prime is 164670599. The reversal of 164670577 is 775076461.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 775076461 = 17 ⋅45592733.

It can be written as a sum of positive squares in 2 ways, for example, as 54819216 + 109851361 = 7404^2 + 10481^2 .

It is a cyclic number.

It is not a de Polignac number, because 164670577 - 2¹⁹ = 164146289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164670557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25918 + ... + 31639.

It is an arithmetic number, because the mean of its divisors is an integer number (41182749).

Almost surely, 2^164670577 is an apocalyptic number.

It is an amenable number.

164670577 is a deficient number, since it is larger than the sum of its proper divisors (60419).

164670577 is an equidigital number, since it uses as much as digits as its factorization.

164670577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60418.

The product of its (nonzero) digits is 246960, while the sum is 43.

The square root of 164670577 is about 12832.4033992078. The cubic root of 164670577 is about 548.1153976259.

The spelling of 164670577 in words is "one hundred sixty-four million, six hundred seventy thousand, five hundred seventy-seven".