684461144 has 16 divisors (see below), whose sum is σ = 1284028200. Its totient is φ = 342053632.

The previous prime is 684461101. The next prime is 684461147. The reversal of 684461144 is 441164486.

It is a junction number, because it is equal to n+sod(n) for n = 684461098 and 684461107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (684461147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4889 + ... + 37320.

Almost surely, 2^684461144 is an apocalyptic number.

It is an amenable number.

684461144 is a deficient number, since it is larger than the sum of its proper divisors (599567056).

684461144 is a wasteful number, since it uses less digits than its factorization.

684461144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44242 (or 44238 counting only the distinct ones).

The product of its digits is 73728, while the sum is 38.

The square root of 684461144 is about 26162.2083165776. The cubic root of 684461144 is about 881.2847728076.

The spelling of 684461144 in words is "six hundred eighty-four million, four hundred sixty-one thousand, one hundred forty-four".