684612732854 has 4 divisors (see below), whose sum is σ = 1026919099284. Its totient is φ = 342306366426.

The previous prime is 684612732851. The next prime is 684612732871. The reversal of 684612732854 is 458237216486.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 684612732854.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (684612732851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171153183212 + ... + 171153183215.

It is an arithmetic number, because the mean of its divisors is an integer number (256729774821).

Almost surely, 2^684612732854 is an apocalyptic number.

684612732854 is a deficient number, since it is larger than the sum of its proper divisors (342306366430).

684612732854 is a wasteful number, since it uses less digits than its factorization.

684612732854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342306366429.

The product of its digits is 15482880, while the sum is 56.

The spelling of 684612732854 in words is "six hundred eighty-four billion, six hundred twelve million, seven hundred thirty-two thousand, eight hundred fifty-four".