164784223 has 2 divisors, whose sum is σ = 164784224. Its totient is φ = 164784222.

The previous prime is 164784211. The next prime is 164784229. The reversal of 164784223 is 322487461.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-164784223 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (164784229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82392111 + 82392112.

It is an arithmetic number, because the mean of its divisors is an integer number (82392112).

Almost surely, 2^164784223 is an apocalyptic number.

164784223 is a deficient number, since it is larger than the sum of its proper divisors (1).

164784223 is an equidigital number, since it uses as much as digits as its factorization.

164784223 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 64512, while the sum is 37.

The square root of 164784223 is about 12836.8307225732. The cubic root of 164784223 is about 548.2414610251.

The spelling of 164784223 in words is "one hundred sixty-four million, seven hundred eighty-four thousand, two hundred twenty-three".