680835804179 has 4 divisors (see below), whose sum is σ = 681127634976. Its totient is φ = 680543973384.

The previous prime is 680835804101. The next prime is 680835804191. The reversal of 680835804179 is 971408538086.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-680835804179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (680835804479) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 145911899 + ... + 145916564.

It is an arithmetic number, because the mean of its divisors is an integer number (170281908744).

Almost surely, 2^680835804179 is an apocalyptic number.

680835804179 is a deficient number, since it is larger than the sum of its proper divisors (291830797).

680835804179 is a wasteful number, since it uses less digits than its factorization.

680835804179 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291830796.

The product of its (nonzero) digits is 11612160, while the sum is 59.

The spelling of 680835804179 in words is "six hundred eighty billion, eight hundred thirty-five million, eight hundred four thousand, one hundred seventy-nine".