693531 has 12 divisors (see below), whose sum is σ = 1009008. Its totient is φ = 459024.

The previous prime is 693529. The next prime is 693533. The reversal of 693531 is 135396.

693531 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (693529) and next prime (693533).

It is not a de Polignac number, because 693531 - 2¹ = 693529 is a prime.

It is a super-2 number, since 2×693531² = 961970495922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 693495 and 693504.

It is not an unprimeable number, because it can be changed into a prime (693533) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2221 + ... + 2513.

It is an arithmetic number, because the mean of its divisors is an integer number (84084).

2⁶⁹³⁵³¹ is an apocalyptic number.

693531 is a deficient number, since it is larger than the sum of its proper divisors (315477).

693531 is a wasteful number, since it uses less digits than its factorization.

693531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 562 (or 559 counting only the distinct ones).

The product of its digits is 2430, while the sum is 27.

The square root of 693531 is about 832.7850863218. The cubic root of 693531 is about 88.5160365462.

It can be divided in two parts, 69 and 3531, that added together give a square (3600 = 60²).

The spelling of 693531 in words is "six hundred ninety-three thousand, five hundred thirty-one".