679006173445 has 8 divisors (see below), whose sum is σ = 828164907000. Its totient is φ = 534299939520.

The previous prime is 679006173413. The next prime is 679006173451. The reversal of 679006173445 is 544371600976.

It can be written as a sum of positive squares in 4 ways, for example, as 70952444161 + 608053729284 = 266369^2 + 779778^2 .

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

It is not a de Polignac number, because 679006173445 - 2⁵ = 679006173413 is a prime.

It is a super-2 number, since 2×679006173445² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 679006173392 and 679006173401.

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 7 ways as a sum of consecutive naturals, for example, 1113124570 + ... + 1113125179.

It is an arithmetic number, because the mean of its divisors is an integer number (103520613375).

Almost surely, 2^679006173445 is an apocalyptic number.

It is an amenable number.

679006173445 is a deficient number, since it is larger than the sum of its proper divisors (149158733555).

679006173445 is a wasteful number, since it uses less digits than its factorization.

679006173445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2226249815.

The product of its (nonzero) digits is 3810240, while the sum is 52.

The spelling of 679006173445 in words is "six hundred seventy-nine billion, six million, one hundred seventy-three thousand, four hundred forty-five".