680887047 has 4 divisors (see below), whose sum is σ = 907849400. Its totient is φ = 453924696.

The previous prime is 680887033. The next prime is 680887087. The reversal of 680887047 is 740788086.

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

It is not a de Polignac number, because 680887047 - 2¹⁶ = 680821511 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 680886987 and 680887005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680887087) 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, 113481172 + ... + 113481177.

It is an arithmetic number, because the mean of its divisors is an integer number (226962350).

Almost surely, 2^680887047 is an apocalyptic number.

680887047 is a deficient number, since it is larger than the sum of its proper divisors (226962353).

680887047 is a wasteful number, since it uses less digits than its factorization.

680887047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226962352.

The product of its (nonzero) digits is 602112, while the sum is 48.

The square root of 680887047 is about 26093.8124274702. The cubic root of 680887047 is about 879.7481403031.

The spelling of 680887047 in words is "six hundred eighty million, eight hundred eighty-seven thousand, forty-seven".