164946247 has 2 divisors, whose sum is σ = 164946248. Its totient is φ = 164946246.

The previous prime is 164946217. The next prime is 164946251. The reversal of 164946247 is 742649461.

164946247 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 164946247 - 2¹⁵ = 164913479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (164946217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82473123 + 82473124.

It is an arithmetic number, because the mean of its divisors is an integer number (82473124).

Almost surely, 2^164946247 is an apocalyptic number.

164946247 is a deficient number, since it is larger than the sum of its proper divisors (1).

164946247 is an equidigital number, since it uses as much as digits as its factorization.

164946247 is an evil number, because the sum of its binary digits is even.

The product of its digits is 290304, while the sum is 43.

The square root of 164946247 is about 12843.1400755423. The cubic root of 164946247 is about 548.4210882073.

The spelling of 164946247 in words is "one hundred sixty-four million, nine hundred forty-six thousand, two hundred forty-seven".