602309 has 2 divisors, whose sum is σ = 602310. Its totient is φ = 602308.

The previous prime is 602297. The next prime is 602311. The reversal of 602309 is 903206.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 592900 + 9409 = 770^2 + 97^2 .

It is a cyclic number.

It is not a de Polignac number, because 602309 - 2¹⁶ = 536773 is a prime.

It is a super-2 number, since 2×602309² = 725552262962, which contains 22 as substring.

Together with 602311, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (602909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 301154 + 301155.

It is an arithmetic number, because the mean of its divisors is an integer number (301155).

2⁶⁰²³⁰⁹ is an apocalyptic number.

It is an amenable number.

602309 is a deficient number, since it is larger than the sum of its proper divisors (1).

602309 is an equidigital number, since it uses as much as digits as its factorization.

602309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 20.

The square root of 602309 is about 776.0856911450. The cubic root of 602309 is about 84.4513217057.

The spelling of 602309 in words is "six hundred two thousand, three hundred nine".