680681041 has 4 divisors (see below), whose sum is σ = 681209584. Its totient is φ = 680152500.

The previous prime is 680681033. The next prime is 680681051. The reversal of 680681041 is 140186086.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 140186086 = 2 ⋅70093043.

It is a cyclic number.

It is not a de Polignac number, because 680681041 - 2³ = 680681033 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 680680988 and 680681006.

It is not an unprimeable number, because it can be changed into a prime (680681051) 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, 262335 + ... + 264916.

It is an arithmetic number, because the mean of its divisors is an integer number (170302396).

Almost surely, 2^680681041 is an apocalyptic number.

It is an amenable number.

680681041 is a deficient number, since it is larger than the sum of its proper divisors (528543).

680681041 is a wasteful number, since it uses less digits than its factorization.

680681041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 528542.

The product of its (nonzero) digits is 9216, while the sum is 34.

The square root of 680681041 is about 26089.8647179321. The cubic root of 680681041 is about 879.6594071928.

The spelling of 680681041 in words is "six hundred eighty million, six hundred eighty-one thousand, forty-one".