684622 has 8 divisors (see below), whose sum is σ = 1030536. Its totient is φ = 341112.

The previous prime is 684617. The next prime is 684637. The reversal of 684622 is 226486.

684622 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 568 + ... + 1300.

It is an arithmetic number, because the mean of its divisors is an integer number (128817).

2⁶⁸⁴⁶²² is an apocalyptic number.

684622 is a deficient number, since it is larger than the sum of its proper divisors (345914).

684622 is a wasteful number, since it uses less digits than its factorization.

684622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1202.

The product of its digits is 4608, while the sum is 28.

The square root of 684622 is about 827.4188781989. The cubic root of 684622 is about 88.1353804649.

The spelling of 684622 in words is "six hundred eighty-four thousand, six hundred twenty-two".