684060609544 has 32 divisors (see below), whose sum is σ = 1453974984000. Its totient is φ = 299103423552.

The previous prime is 684060609439. The next prime is 684060609577. The reversal of 684060609544 is 445906060486.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is a junction number, because it is equal to n+sod(n) for n = 684060609491 and 684060609500.

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, 173090284 + ... + 173094235.

It is an arithmetic number, because the mean of its divisors is an integer number (45436718250).

Almost surely, 2^684060609544 is an apocalyptic number.

It is an amenable number.

684060609544 is an abundant number, since it is smaller than the sum of its proper divisors (769914374456).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

684060609544 is a wasteful number, since it uses less digits than its factorization.

684060609544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 346184557 (or 346184553 counting only the distinct ones).

The product of its (nonzero) digits is 4976640, while the sum is 52.

The spelling of 684060609544 in words is "six hundred eighty-four billion, sixty million, six hundred nine thousand, five hundred forty-four".