680791847 has 4 divisors (see below), whose sum is σ = 680901936. Its totient is φ = 680681760.

The previous prime is 680791819. The next prime is 680791913. The reversal of 680791847 is 748197086.

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

It is a cyclic number.

It is not a de Polignac number, because 680791847 - 2⁸ = 680791591 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 680791795 and 680791804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680791817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45179 + ... + 58332.

It is an arithmetic number, because the mean of its divisors is an integer number (170225484).

Almost surely, 2^680791847 is an apocalyptic number.

680791847 is a deficient number, since it is larger than the sum of its proper divisors (110089).

680791847 is a wasteful number, since it uses less digits than its factorization.

680791847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110088.

The product of its (nonzero) digits is 677376, while the sum is 50.

The square root of 680791847 is about 26091.9881764499. The cubic root of 680791847 is about 879.7071369644.

The spelling of 680791847 in words is "six hundred eighty million, seven hundred ninety-one thousand, eight hundred forty-seven".