693403 has 2 divisors, whose sum is σ = 693404. Its totient is φ = 693402.

The previous prime is 693401. The next prime is 693409. The reversal of 693403 is 304396.

693403 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 is a cyclic number.

It is not a de Polignac number, because 693403 - 2¹ = 693401 is a prime.

Together with 693401, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (693401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 346701 + 346702.

It is an arithmetic number, because the mean of its divisors is an integer number (346702).

2⁶⁹³⁴⁰³ is an apocalyptic number.

693403 is a deficient number, since it is larger than the sum of its proper divisors (1).

693403 is an equidigital number, since it uses as much as digits as its factorization.

693403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 25.

The square root of 693403 is about 832.7082322158. The cubic root of 693403 is about 88.5105906230.

Adding to 693403 its reverse (304396), we get a palindrome (997799).

The spelling of 693403 in words is "six hundred ninety-three thousand, four hundred three".