679034681784 has 96 divisors (see below), whose sum is σ = 1874818735920. Its totient is φ = 221947734528.

The previous prime is 679034681657. The next prime is 679034681803. The reversal of 679034681784 is 487186430976.

679034681784 is a `hidden beast` number, since 6 + 7 + 90 + 3 + 468 + 1 + 7 + 84 = 666.

It is a super-2 number, since 2×679034681784² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6769404 + ... + 6868980.

Almost surely, 2^679034681784 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 679034681784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (937409367960).

679034681784 is an abundant number, since it is smaller than the sum of its proper divisors (1195784054136).

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

679034681784 is a wasteful number, since it uses less digits than its factorization.

679034681784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101429 (or 101422 counting only the distinct ones).

The product of its (nonzero) digits is 48771072, while the sum is 63.

The spelling of 679034681784 in words is "six hundred seventy-nine billion, thirty-four million, six hundred eighty-one thousand, seven hundred eighty-four".