684560140015 has 8 divisors (see below), whose sum is σ = 821504785248. Its totient is φ = 547626367200.

The previous prime is 684560140009. The next prime is 684560140039. The reversal of 684560140015 is 510041065486.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-684560140015 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 684560140015.

It is a congruent number.

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, 2578936 + ... + 2831965.

It is an arithmetic number, because the mean of its divisors is an integer number (102688098156).

Almost surely, 2^684560140015 is an apocalyptic number.

684560140015 is a deficient number, since it is larger than the sum of its proper divisors (136944645233).

684560140015 is a wasteful number, since it uses less digits than its factorization.

684560140015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5436209.

The product of its (nonzero) digits is 115200, while the sum is 40.

The spelling of 684560140015 in words is "six hundred eighty-four billion, five hundred sixty million, one hundred forty thousand, fifteen".