679072349655 has 160 divisors (see below), whose sum is σ = 1423176708096. Its totient is φ = 303320007936.

The previous prime is 679072349647. The next prime is 679072349707. The reversal of 679072349655 is 556943270976.

679072349655 is a `hidden beast` number, since 6 + 7 + 90 + 7 + 2 + 3 + 496 + 55 = 666.

It is not a de Polignac number, because 679072349655 - 2³ = 679072349647 is a prime.

It is a super-2 number, since 2×679072349655² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a junction number, because it is equal to n+sod(n) for n = 679072349592 and 679072349601.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 86205577 + ... + 86213453.

Almost surely, 2^679072349655 is an apocalyptic number.

679072349655 is an abundant number, since it is smaller than the sum of its proper divisors (744104358441).

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

679072349655 is a wasteful number, since it uses less digits than its factorization.

679072349655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8595 (or 8586 counting only the distinct ones).

The product of its (nonzero) digits is 85730400, while the sum is 63.

The spelling of 679072349655 in words is "six hundred seventy-nine billion, seventy-two million, three hundred forty-nine thousand, six hundred fifty-five".