690318 has 12 divisors (see below), whose sum is σ = 1495728. Its totient is φ = 230100.

The previous prime is 690293. The next prime is 690323. The reversal of 690318 is 813096.

It is a super-2 number, since 2×690318² = 953077882248, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 690291 and 690300.

It is a congruent number.

It is an unprimeable number.

690318 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 19158 + ... + 19193.

It is an arithmetic number, because the mean of its divisors is an integer number (124644).

2⁶⁹⁰³¹⁸ is an apocalyptic number.

690318 is an abundant number, since it is smaller than the sum of its proper divisors (805410).

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

690318 is a wasteful number, since it uses less digits than its factorization.

690318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38359 (or 38356 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 690318 is about 830.8537777491. The cubic root of 690318 is about 88.3791321381.

The spelling of 690318 in words is "six hundred ninety thousand, three hundred eighteen".