684622238 has 8 divisors (see below), whose sum is σ = 1037101320. Its totient is φ = 338921800.

The previous prime is 684622219. The next prime is 684622241. The reversal of 684622238 is 832226486.

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

It is a junction number, because it is equal to n+sod(n) for n = 684622195 and 684622204.

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, 1694408 + ... + 1694811.

It is an arithmetic number, because the mean of its divisors is an integer number (129637665).

Almost surely, 2^684622238 is an apocalyptic number.

684622238 is a deficient number, since it is larger than the sum of its proper divisors (352479082).

684622238 is a wasteful number, since it uses less digits than its factorization.

684622238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3389322.

The product of its digits is 221184, while the sum is 41.

The square root of 684622238 is about 26165.2868893120. The cubic root of 684622238 is about 881.3539067796.

The spelling of 684622238 in words is "six hundred eighty-four million, six hundred twenty-two thousand, two hundred thirty-eight".