684214124 has 12 divisors (see below), whose sum is σ = 1306227048. Its totient is φ = 311006400.

The previous prime is 684214121. The next prime is 684214127. The reversal of 684214124 is 421412486.

It is an interprime number because it is at equal distance from previous prime (684214121) and next prime (684214127).

It is not an unprimeable number, because it can be changed into a prime (684214121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7775117 + ... + 7775204.

It is an arithmetic number, because the mean of its divisors is an integer number (108852254).

Almost surely, 2^684214124 is an apocalyptic number.

It is an amenable number.

684214124 is a deficient number, since it is larger than the sum of its proper divisors (622012924).

684214124 is a wasteful number, since it uses less digits than its factorization.

684214124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15550336 (or 15550334 counting only the distinct ones).

The product of its digits is 12288, while the sum is 32.

The square root of 684214124 is about 26157.4869588040. The cubic root of 684214124 is about 881.1787423630.

The spelling of 684214124 in words is "six hundred eighty-four million, two hundred fourteen thousand, one hundred twenty-four".