690306 has 16 divisors (see below), whose sum is σ = 1395264. Its totient is φ = 227664.

The previous prime is 690293. The next prime is 690323. The reversal of 690306 is 603096.

It is a nialpdrome in base 16.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 690306.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60 + ... + 1176.

It is an arithmetic number, because the mean of its divisors is an integer number (87204).

2⁶⁹⁰³⁰⁶ is an apocalyptic number.

690306 is an abundant number, since it is smaller than the sum of its proper divisors (704958).

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

690306 is a wasteful number, since it uses less digits than its factorization.

690306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1225.

The product of its (nonzero) digits is 972, while the sum is 24.

The square root of 690306 is about 830.8465562305. The cubic root of 690306 is about 88.3786200283.

The spelling of 690306 in words is "six hundred ninety thousand, three hundred six".