163897247 has 2 divisors, whose sum is σ = 163897248. Its totient is φ = 163897246.

The previous prime is 163897219. The next prime is 163897303. The reversal of 163897247 is 742798361.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 163897247 - 2¹⁴ = 163880863 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (163897207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81948623 + 81948624.

It is an arithmetic number, because the mean of its divisors is an integer number (81948624).

Almost surely, 2^163897247 is an apocalyptic number.

163897247 is a deficient number, since it is larger than the sum of its proper divisors (1).

163897247 is an equidigital number, since it uses as much as digits as its factorization.

163897247 is an evil number, because the sum of its binary digits is even.

The product of its digits is 508032, while the sum is 47.

The square root of 163897247 is about 12802.2360156341. The cubic root of 163897247 is about 547.2560266305.

The spelling of 163897247 in words is "one hundred sixty-three million, eight hundred ninety-seven thousand, two hundred forty-seven".