680336747 has 4 divisors (see below), whose sum is σ = 680690640. Its totient is φ = 679982856.

The previous prime is 680336731. The next prime is 680336749. The reversal of 680336747 is 747633086.

680336747 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 680336747 - 2⁴ = 680336731 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 680336698 and 680336707.

It is not an unprimeable number, because it can be changed into a prime (680336749) 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, 174047 + ... + 177912.

It is an arithmetic number, because the mean of its divisors is an integer number (170172660).

Almost surely, 2^680336747 is an apocalyptic number.

680336747 is a deficient number, since it is larger than the sum of its proper divisors (353893).

680336747 is a wasteful number, since it uses less digits than its factorization.

680336747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 353892.

The product of its (nonzero) digits is 508032, while the sum is 44.

The square root of 680336747 is about 26083.2656506044. The cubic root of 680336747 is about 879.5110692218.

The spelling of 680336747 in words is "six hundred eighty million, three hundred thirty-six thousand, seven hundred forty-seven".