164287247 has 2 divisors, whose sum is σ = 164287248. Its totient is φ = 164287246.

The previous prime is 164287187. The next prime is 164287271. The reversal of 164287247 is 742782461.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (742782461) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 164287247 - 2¹² = 164283151 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (164283247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82143623 + 82143624.

It is an arithmetic number, because the mean of its divisors is an integer number (82143624).

Almost surely, 2^164287247 is an apocalyptic number.

164287247 is a deficient number, since it is larger than the sum of its proper divisors (1).

164287247 is an equidigital number, since it uses as much as digits as its factorization.

164287247 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 150528, while the sum is 41.

The square root of 164287247 is about 12817.4586794731. The cubic root of 164287247 is about 547.6897552612.

The spelling of 164287247 in words is "one hundred sixty-four million, two hundred eighty-seven thousand, two hundred forty-seven".