684223252 has 24 divisors (see below), whose sum is σ = 1229380992. Its totient is φ = 333009600.

The previous prime is 684223223. The next prime is 684223273. The reversal of 684223252 is 252322486.

It is a super-2 number, since 2×684223252² = 936322917154911008, which contains 22 as substring.

It is a congruent number.

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, 71427 + ... + 80437.

It is an arithmetic number, because the mean of its divisors is an integer number (51224208).

Almost surely, 2^684223252 is an apocalyptic number.

It is an amenable number.

684223252 is a deficient number, since it is larger than the sum of its proper divisors (545157740).

684223252 is a wasteful number, since it uses less digits than its factorization.

684223252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9519 (or 9517 counting only the distinct ones).

The product of its digits is 46080, while the sum is 34.

The square root of 684223252 is about 26157.6614398153. The cubic root of 684223252 is about 881.1826609042.

The spelling of 684223252 in words is "six hundred eighty-four million, two hundred twenty-three thousand, two hundred fifty-two".