696496309 has 2 divisors, whose sum is σ = 696496310. Its totient is φ = 696496308.

The previous prime is 696496291. The next prime is 696496343. The reversal of 696496309 is 903694696.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 689850225 + 6646084 = 26265^2 + 2578^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-696496309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (696496369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 348248154 + 348248155.

It is an arithmetic number, because the mean of its divisors is an integer number (348248155).

Almost surely, 2^696496309 is an apocalyptic number.

It is an amenable number.

696496309 is a deficient number, since it is larger than the sum of its proper divisors (1).

696496309 is an equidigital number, since it uses as much as digits as its factorization.

696496309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1889568, while the sum is 52.

The square root of 696496309 is about 26391.2165123171. The cubic root of 696496309 is about 886.4201226421.

The spelling of 696496309 in words is "six hundred ninety-six million, four hundred ninety-six thousand, three hundred nine".