693423 has 6 divisors (see below), whose sum is σ = 1001624. Its totient is φ = 462276.

The previous prime is 693421. The next prime is 693431. The reversal of 693423 is 324396.

It is not a de Polignac number, because 693423 - 2¹ = 693421 is a prime.

It is a d-powerful number, because it can be written as 6⁷ + 9⁵ + 4² + 3¹¹ + 2⁷ + 3¹¹ .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (693421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 38515 + ... + 38532.

2⁶⁹³⁴²³ is an apocalyptic number.

693423 is a deficient number, since it is larger than the sum of its proper divisors (308201).

693423 is a wasteful number, since it uses less digits than its factorization.

693423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77053 (or 77050 counting only the distinct ones).

The product of its digits is 3888, while the sum is 27.

The square root of 693423 is about 832.7202411374. The cubic root of 693423 is about 88.5114415926.

Subtracting from 693423 its sum of digits (27), we obtain a palindrome (693396).

The spelling of 693423 in words is "six hundred ninety-three thousand, four hundred twenty-three".