320772247 has 2 divisors, whose sum is σ = 320772248. Its totient is φ = 320772246.

The previous prime is 320772229. The next prime is 320772259. The reversal of 320772247 is 742277023.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 320772247 - 2¹⁵ = 320739479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320778247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160386123 + 160386124.

It is an arithmetic number, because the mean of its divisors is an integer number (160386124).

Almost surely, 2^320772247 is an apocalyptic number.

320772247 is a deficient number, since it is larger than the sum of its proper divisors (1).

320772247 is an equidigital number, since it uses as much as digits as its factorization.

320772247 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32928, while the sum is 34.

The square root of 320772247 is about 17910.1157729368. The cubic root of 320772247 is about 684.5401549023.

The spelling of 320772247 in words is "three hundred twenty million, seven hundred seventy-two thousand, two hundred forty-seven".