679205635643064 has 64 divisors (see below), whose sum is σ = 1771845446534400. Its totient is φ = 216557749312256.

The previous prime is 679205635642969. The next prime is 679205635643141. The reversal of 679205635643064 is 460346536502976.

It is a super-2 number, since 2×679205635643064² (a number of 30 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (66) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 679205635642986 and 679205635643004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 241669972 + ... + 244464284.

It is an arithmetic number, because the mean of its divisors is an integer number (27685085102100).

Almost surely, 2^{679205635643064} is an apocalyptic number.

It is an amenable number.

679205635643064 is an abundant number, since it is smaller than the sum of its proper divisors (1092639810891336).

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

679205635643064 is a wasteful number, since it uses less digits than its factorization.

679205635643064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3234684 (or 3234680 counting only the distinct ones).

The product of its (nonzero) digits is 587865600, while the sum is 66.

The spelling of 679205635643064 in words is "six hundred seventy-nine trillion, two hundred five billion, six hundred thirty-five million, six hundred forty-three thousand, sixty-four".