680231228065 has 4 divisors (see below), whose sum is σ = 816277473684. Its totient is φ = 544184982448.

The previous prime is 680231228063. The next prime is 680231228087. The reversal of 680231228065 is 560822132086.

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

It can be written as a sum of positive squares in 2 ways, for example, as 269883367009 + 410347861056 = 519503^2 + 640584^2 .

It is a cyclic number.

It is not a de Polignac number, because 680231228065 - 2¹ = 680231228063 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (680231228063) 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, 68023122802 + ... + 68023122811.

It is an arithmetic number, because the mean of its divisors is an integer number (204069368421).

Almost surely, 2^680231228065 is an apocalyptic number.

It is an amenable number.

680231228065 is a deficient number, since it is larger than the sum of its proper divisors (136046245619).

680231228065 is a wasteful number, since it uses less digits than its factorization.

680231228065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136046245618.

The product of its (nonzero) digits is 276480, while the sum is 43.

The spelling of 680231228065 in words is "six hundred eighty billion, two hundred thirty-one million, two hundred twenty-eight thousand, sixty-five".