164396671 has 2 divisors, whose sum is σ = 164396672. Its totient is φ = 164396670.

The previous prime is 164396669. The next prime is 164396723. The reversal of 164396671 is 176693461.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 164396671 - 2¹ = 164396669 is a prime.

Together with 164396669, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (164396651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82198335 + 82198336.

It is an arithmetic number, because the mean of its divisors is an integer number (82198336).

Almost surely, 2^164396671 is an apocalyptic number.

164396671 is a deficient number, since it is larger than the sum of its proper divisors (1).

164396671 is an equidigital number, since it uses as much as digits as its factorization.

164396671 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 163296, while the sum is 43.

The square root of 164396671 is about 12821.7265218066. The cubic root of 164396671 is about 547.8113250609.

The spelling of 164396671 in words is "one hundred sixty-four million, three hundred ninety-six thousand, six hundred seventy-one".