164332247 has 2 divisors, whose sum is σ = 164332248. Its totient is φ = 164332246.

The previous prime is 164332229. The next prime is 164332261. The reversal of 164332247 is 742233461.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 164332247 - 2¹⁸ = 164070103 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (164332297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82166123 + 82166124.

It is an arithmetic number, because the mean of its divisors is an integer number (82166124).

Almost surely, 2^164332247 is an apocalyptic number.

164332247 is a deficient number, since it is larger than the sum of its proper divisors (1).

164332247 is an equidigital number, since it uses as much as digits as its factorization.

164332247 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24192, while the sum is 32.

The square root of 164332247 is about 12819.2139774637. The cubic root of 164332247 is about 547.7397566856.

The spelling of 164332247 in words is "one hundred sixty-four million, three hundred thirty-two thousand, two hundred forty-seven".