320764097 has 2 divisors, whose sum is σ = 320764098. Its totient is φ = 320764096.

The previous prime is 320764091. The next prime is 320764123. The reversal of 320764097 is 790467023.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 249513616 + 71250481 = 15796^2 + 8441^2 .

It is an emirp because it is prime and its reverse (790467023) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 320764097 - 2¹⁶ = 320698561 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 320764097.

It is not a weakly prime, because it can be changed into another prime (320764091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160382048 + 160382049.

It is an arithmetic number, because the mean of its divisors is an integer number (160382049).

Almost surely, 2^320764097 is an apocalyptic number.

It is an amenable number.

320764097 is a deficient number, since it is larger than the sum of its proper divisors (1).

320764097 is an equidigital number, since it uses as much as digits as its factorization.

320764097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 63504, while the sum is 38.

The square root of 320764097 is about 17909.8882464408. Note that the first 3 decimals coincide. The cubic root of 320764097 is about 684.5343573833.

The spelling of 320764097 in words is "three hundred twenty million, seven hundred sixty-four thousand, ninety-seven".