693370813 has 2 divisors, whose sum is σ = 693370814. Its totient is φ = 693370812.

The previous prime is 693370771. The next prime is 693370879. The reversal of 693370813 is 318073396.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 683404164 + 9966649 = 26142^2 + 3157^2 .

It is a cyclic number.

It is not a de Polignac number, because 693370813 - 2¹⁷ = 693239741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (693370883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 346685406 + 346685407.

It is an arithmetic number, because the mean of its divisors is an integer number (346685407).

Almost surely, 2^693370813 is an apocalyptic number.

It is an amenable number.

693370813 is a deficient number, since it is larger than the sum of its proper divisors (1).

693370813 is an equidigital number, since it uses as much as digits as its factorization.

693370813 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 81648, while the sum is 40.

The square root of 693370813 is about 26331.9352308181. The cubic root of 693370813 is about 885.0922108054.

The spelling of 693370813 in words is "six hundred ninety-three million, three hundred seventy thousand, eight hundred thirteen".