690216 has 16 divisors (see below), whose sum is σ = 1725600. Its totient is φ = 230064.

The previous prime is 690187. The next prime is 690233. The reversal of 690216 is 612096.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 28759 = 690216 / (6 + 9 + 0 + 2 + 1 + 6).

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 690216.

It is an unprimeable number.

690216 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 3 ways as a sum of consecutive naturals, for example, 14356 + ... + 14403.

It is an arithmetic number, because the mean of its divisors is an integer number (107850).

2⁶⁹⁰²¹⁶ is an apocalyptic number.

It is an amenable number.

690216 is an abundant number, since it is smaller than the sum of its proper divisors (1035384).

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

690216 is a wasteful number, since it uses less digits than its factorization.

690216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28768 (or 28764 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 690216 is about 830.7923928395. The cubic root of 690216 is about 88.3747790160.

The spelling of 690216 in words is "six hundred ninety thousand, two hundred sixteen".