684737070080 has 528 divisors, whose sum is σ = 2032342824960. Its totient is φ = 220224356352.

The previous prime is 684737070053. The next prime is 684737070089. The reversal of 684737070080 is 80070737486.

It is not an unprimeable number, because it can be changed into a prime (684737070089) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 305821601 + ... + 305823839.

Almost surely, 2^684737070080 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 684737070080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1016171412480).

684737070080 is an abundant number, since it is smaller than the sum of its proper divisors (1347605754880).

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

684737070080 is a wasteful number, since it uses less digits than its factorization.

684737070080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2354 (or 2329 counting only the distinct ones).

The product of its (nonzero) digits is 1580544, while the sum is 50.

The spelling of 684737070080 in words is "six hundred eighty-four billion, seven hundred thirty-seven million, seventy thousand, eighty".