693793421 has 2 divisors, whose sum is σ = 693793422. Its totient is φ = 693793420.

The previous prime is 693793411. The next prime is 693793447. The reversal of 693793421 is 124397396.

693793421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 598340521 + 95452900 = 24461^2 + 9770^2 .

It is a cyclic number.

It is not a de Polignac number, because 693793421 - 2¹⁰ = 693792397 is a prime.

It is a super-2 number, since 2×693793421² = 962698622045766482, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (693793411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 346896710 + 346896711.

It is an arithmetic number, because the mean of its divisors is an integer number (346896711).

Almost surely, 2^693793421 is an apocalyptic number.

It is an amenable number.

693793421 is a deficient number, since it is larger than the sum of its proper divisors (1).

693793421 is an equidigital number, since it uses as much as digits as its factorization.

693793421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 244944, while the sum is 44.

The square root of 693793421 is about 26339.9586370214. The cubic root of 693793421 is about 885.2719948758.

The spelling of 693793421 in words is "six hundred ninety-three million, seven hundred ninety-three thousand, four hundred twenty-one".