320693 has 2 divisors, whose sum is σ = 320694. Its totient is φ = 320692.

The previous prime is 320687. The next prime is 320699. The reversal of 320693 is 396023.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (320687) and next prime (320699).

It can be written as a sum of positive squares in only one way, i.e., 305809 + 14884 = 553^2 + 122^2 .

It is a cyclic number.

It is not a de Polignac number, because 320693 - 2¹⁸ = 58549 is a prime.

It is a Sophie Germain prime.

It is an Ulam number.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160346 + 160347.

It is an arithmetic number, because the mean of its divisors is an integer number (160347).

2³²⁰⁶⁹³ is an apocalyptic number.

It is an amenable number.

320693 is a deficient number, since it is larger than the sum of its proper divisors (1).

320693 is an equidigital number, since it uses as much as digits as its factorization.

320693 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 972, while the sum is 23.

The square root of 320693 is about 566.2976249288. The cubic root of 320693 is about 68.4483778224.

The spelling of 320693 in words is "three hundred twenty thousand, six hundred ninety-three".