164341661 has 4 divisors (see below), whose sum is σ = 179281824. Its totient is φ = 149401500.

The previous prime is 164341561. The next prime is 164341721. The reversal of 164341661 is 166143461.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 166143461 = 11 ⋅15103951.

It is a cyclic number.

It is not a de Polignac number, because 164341661 - 2¹⁰ = 164340637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164341061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7470065 + ... + 7470086.

It is an arithmetic number, because the mean of its divisors is an integer number (44820456).

Almost surely, 2^164341661 is an apocalyptic number.

164341661 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

164341661 is a deficient number, since it is larger than the sum of its proper divisors (14940163).

164341661 is a wasteful number, since it uses less digits than its factorization.

164341661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14940162.

The product of its digits is 10368, while the sum is 32.

The square root of 164341661 is about 12819.5811554044. The cubic root of 164341661 is about 547.7502158290.

The spelling of 164341661 in words is "one hundred sixty-four million, three hundred forty-one thousand, six hundred sixty-one".