693240 has 64 divisors (see below), whose sum is σ = 2138400. Its totient is φ = 179712.

The previous prime is 693223. The next prime is 693257. The reversal of 693240 is 42396.

It is an interprime number because it is at equal distance from previous prime (693223) and next prime (693257).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an Ulam number.

It is a nialpdrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 693240.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 6306 + ... + 6414.

2⁶⁹³²⁴⁰ is an apocalyptic number.

693240 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 693240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1069200).

693240 is an abundant number, since it is smaller than the sum of its proper divisors (1445160).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

693240 is a wasteful number, since it uses less digits than its factorization.

693240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176 (or 172 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 693240 is about 832.6103530464. The cubic root of 693240 is about 88.5036546098.

The spelling of 693240 in words is "six hundred ninety-three thousand, two hundred forty".