684448180045 has 96 divisors (see below), whose sum is σ = 989877708288. Its totient is φ = 452732700672.

The previous prime is 684448179979. The next prime is 684448180063. The reversal of 684448180045 is 540081844486.

It is not a de Polignac number, because 684448180045 - 2⁹ = 684448179533 is a prime.

It is a super-2 number, since 2×684448180045² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 684448179974 and 684448180001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 700560597 + ... + 700561573.

It is an arithmetic number, because the mean of its divisors is an integer number (10311226128).

Almost surely, 2^684448180045 is an apocalyptic number.

It is an amenable number.

684448180045 is a deficient number, since it is larger than the sum of its proper divisors (305429528243).

684448180045 is a wasteful number, since it uses less digits than its factorization.

684448180045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1859 (or 1852 counting only the distinct ones).

The product of its (nonzero) digits is 3932160, while the sum is 52.

The spelling of 684448180045 in words is "six hundred eighty-four billion, four hundred forty-eight million, one hundred eighty thousand, forty-five".