684652 has 6 divisors (see below), whose sum is σ = 1198148. Its totient is φ = 342324.

The previous prime is 684647. The next prime is 684683. The reversal of 684652 is 256486.

684652 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×684652² = 937496722208, which contains 22 as substring.

It is an unprimeable number.

684652 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 as a sum of consecutive naturals, namely, 85578 + ... + 85585.

2⁶⁸⁴⁶⁵² is an apocalyptic number.

It is an amenable number.

684652 is a deficient number, since it is larger than the sum of its proper divisors (513496).

684652 is a wasteful number, since it uses less digits than its factorization.

684652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171167 (or 171165 counting only the distinct ones).

The product of its digits is 11520, while the sum is 31.

The square root of 684652 is about 827.4370066658. The cubic root of 684652 is about 88.1366678044.

The spelling of 684652 in words is "six hundred eighty-four thousand, six hundred fifty-two".