693385397 has 2 divisors, whose sum is σ = 693385398. Its totient is φ = 693385396.

The previous prime is 693385351. The next prime is 693385417. The reversal of 693385397 is 793583396.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 682567876 + 10817521 = 26126^2 + 3289^2 .

It is a cyclic number.

It is not a de Polignac number, because 693385397 - 2¹² = 693381301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (693385327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 346692698 + 346692699.

It is an arithmetic number, because the mean of its divisors is an integer number (346692699).

Almost surely, 2^693385397 is an apocalyptic number.

It is an amenable number.

693385397 is a deficient number, since it is larger than the sum of its proper divisors (1).

693385397 is an equidigital number, since it uses as much as digits as its factorization.

693385397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3674160, while the sum is 53.

The square root of 693385397 is about 26332.2121554570. The cubic root of 693385397 is about 885.0984162845.

The spelling of 693385397 in words is "six hundred ninety-three million, three hundred eighty-five thousand, three hundred ninety-seven".