8681245345 has 4 divisors (see below), whose sum is σ = 10417494420. Its totient is φ = 6944996272.

The previous prime is 8681245343. The next prime is 8681245367. The reversal of 8681245345 is 5435421868.

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 1932129936 + 6749115409 = 43956^2 + 82153^2 .

It is a cyclic number.

It is not a de Polignac number, because 8681245345 - 2¹ = 8681245343 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8681245295 and 8681245304.

It is not an unprimeable number, because it can be changed into a prime (8681245343) 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, 868124530 + ... + 868124539.

It is an arithmetic number, because the mean of its divisors is an integer number (2604373605).

Almost surely, 2^8681245345 is an apocalyptic number.

It is an amenable number.

8681245345 is a deficient number, since it is larger than the sum of its proper divisors (1736249075).

8681245345 is a wasteful number, since it uses less digits than its factorization.

8681245345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1736249074.

The product of its digits is 921600, while the sum is 46.

The square root of 8681245345 is about 93173.2007875655. The cubic root of 8681245345 is about 2055.2311645127.

The spelling of 8681245345 in words is "eight billion, six hundred eighty-one million, two hundred forty-five thousand, three hundred forty-five".