8723634345 has 12 divisors (see below), whose sum is σ = 15120966276. Its totient is φ = 4652604960.

The previous prime is 8723634259. The next prime is 8723634349. The reversal of 8723634345 is 5434363278.

8723634345 is a `hidden beast` number, since 8 + 7 + 2 + 3 + 634 + 3 + 4 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 5414163561 + 3309470784 = 73581^2 + 57528^2 .

It is not a de Polignac number, because 8723634345 - 2⁸ = 8723634089 is a prime.

It is a super-2 number, since 2×8723634345² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 193858541 = 8723634345 / (8 + 7 + 2 + 3 + 6 + 3 + 4 + 3 + 4 + 5).

It is an alternating number because its digits alternate between even and odd.

It is a self number, because there is not a number n which added to its sum of digits gives 8723634345.

It is not an unprimeable number, because it can be changed into a prime (8723634349) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 96929226 + ... + 96929315.

It is an arithmetic number, because the mean of its divisors is an integer number (1260080523).

Almost surely, 2^8723634345 is an apocalyptic number.

It is an amenable number.

8723634345 is a deficient number, since it is larger than the sum of its proper divisors (6397331931).

8723634345 is a wasteful number, since it uses less digits than its factorization.

8723634345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193858552 (or 193858549 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 45.

The square root of 8723634345 is about 93400.3979916574. The cubic root of 8723634345 is about 2058.5708459315.

The spelling of 8723634345 in words is "eight billion, seven hundred twenty-three million, six hundred thirty-four thousand, three hundred forty-five".