693145 has 4 divisors (see below), whose sum is σ = 831780. Its totient is φ = 554512.

The previous prime is 693137. The next prime is 693149. The reversal of 693145 is 541396.

693145 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.

It can be written as a sum of positive squares in 2 ways, for example, as 328329 + 364816 = 573^2 + 604^2 .

It is a cyclic number.

It is not a de Polignac number, because 693145 - 2³ = 693137 is a prime.

It is not an unprimeable number, because it can be changed into a prime (693149) 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, 69310 + ... + 69319.

It is an arithmetic number, because the mean of its divisors is an integer number (207945).

2⁶⁹³¹⁴⁵ is an apocalyptic number.

It is an amenable number.

693145 is a deficient number, since it is larger than the sum of its proper divisors (138635).

693145 is a wasteful number, since it uses less digits than its factorization.

693145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138634.

The product of its digits is 3240, while the sum is 28.

The square root of 693145 is about 832.5533015970. The cubic root of 693145 is about 88.4996116467.

It can be divided in two parts, 693 and 145, that added together give a palindrome (838).

The spelling of 693145 in words is "six hundred ninety-three thousand, one hundred forty-five".