696333509 has 2 divisors, whose sum is σ = 696333510. Its totient is φ = 696333508.

The previous prime is 696333503. The next prime is 696333511. The reversal of 696333509 is 905333696.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 470673025 + 225660484 = 21695^2 + 15022^2 .

It is a cyclic number.

It is not a de Polignac number, because 696333509 - 2⁴ = 696333493 is a prime.

Together with 696333511, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 696333509.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (696333503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 348166754 + 348166755.

It is an arithmetic number, because the mean of its divisors is an integer number (348166755).

Almost surely, 2^696333509 is an apocalyptic number.

It is an amenable number.

696333509 is a deficient number, since it is larger than the sum of its proper divisors (1).

696333509 is an equidigital number, since it uses as much as digits as its factorization.

696333509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 393660, while the sum is 44.

The square root of 696333509 is about 26388.1319725364. The cubic root of 696333509 is about 886.3510529097.

The spelling of 696333509 in words is "six hundred ninety-six million, three hundred thirty-three thousand, five hundred nine".