693813 has 4 divisors (see below), whose sum is σ = 925088. Its totient is φ = 462540.

The previous prime is 693809. The next prime is 693827. The reversal of 693813 is 318396.

693813 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 693813 - 2² = 693809 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 693813.

It is not an unprimeable number, because it can be changed into a prime (691813) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 115633 + ... + 115638.

It is an arithmetic number, because the mean of its divisors is an integer number (231272).

2⁶⁹³⁸¹³ is an apocalyptic number.

It is an amenable number.

693813 is a deficient number, since it is larger than the sum of its proper divisors (231275).

693813 is a wasteful number, since it uses less digits than its factorization.

693813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231274.

The product of its digits is 3888, while the sum is 30.

The square root of 693813 is about 832.9543805035. The cubic root of 693813 is about 88.5280322320.

The spelling of 693813 in words is "six hundred ninety-three thousand, eight hundred thirteen".