680767947 has 12 divisors (see below), whose sum is σ = 989845584. Its totient is φ = 450838800.

The previous prime is 680767877. The next prime is 680767949. The reversal of 680767947 is 749767086.

680767947 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 680767947 - 2⁸ = 680767691 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 680767893 and 680767902.

It is not an unprimeable number, because it can be changed into a prime (680767949) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 249108 + ... + 251825.

It is an arithmetic number, because the mean of its divisors is an integer number (82487132).

Almost surely, 2^680767947 is an apocalyptic number.

680767947 is a deficient number, since it is larger than the sum of its proper divisors (309077637).

680767947 is a wasteful number, since it uses less digits than its factorization.

680767947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 501090 (or 501087 counting only the distinct ones).

The product of its (nonzero) digits is 3556224, while the sum is 54.

The square root of 680767947 is about 26091.5301774350. The cubic root of 680767947 is about 879.6968424587.

The spelling of 680767947 in words is "six hundred eighty million, seven hundred sixty-seven thousand, nine hundred forty-seven".