684875578487 has 8 divisors (see below), whose sum is σ = 693081225216. Its totient is φ = 676703356792.

The previous prime is 684875578477. The next prime is 684875578537. The reversal of 684875578487 is 784875578486.

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

It is a cyclic number.

It is not a de Polignac number, because 684875578487 - 2¹⁴ = 684875562103 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (684875578477) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8315033 + ... + 8396994.

It is an arithmetic number, because the mean of its divisors is an integer number (86635153152).

Almost surely, 2^684875578487 is an apocalyptic number.

684875578487 is a deficient number, since it is larger than the sum of its proper divisors (8205646729).

684875578487 is a wasteful number, since it uses less digits than its factorization.

684875578487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16712517.

The product of its digits is 3371827200, while the sum is 77.

Subtracting 684875578487 from its reverse (784875578486), we obtain a palindrome (99999999999).

The spelling of 684875578487 in words is "six hundred eighty-four billion, eight hundred seventy-five million, five hundred seventy-eight thousand, four hundred eighty-seven".