679745547975 has 48 divisors (see below), whose sum is σ = 1225616000000. Its totient is φ = 330407925120.

The previous prime is 679745547959. The next prime is 679745547983. The reversal of 679745547975 is 579745547976.

It is not a de Polignac number, because 679745547975 - 2⁴ = 679745547959 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (75).

It is a junction number, because it is equal to n+sod(n) for n = 679745547897 and 679745547906.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4335475 + ... + 4489524.

Almost surely, 2^679745547975 is an apocalyptic number.

679745547975 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

679745547975 is a deficient number, since it is larger than the sum of its proper divisors (545870452025).

679745547975 is a wasteful number, since it uses less digits than its factorization.

679745547975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8825104 (or 8825099 counting only the distinct ones).

The product of its digits is 2333772000, while the sum is 75.

Subtracting from 679745547975 its reverse (579745547976), we obtain a palindrome (99999999999).

The spelling of 679745547975 in words is "six hundred seventy-nine billion, seven hundred forty-five million, five hundred forty-seven thousand, nine hundred seventy-five".