8626423257 has 12 divisors (see below), whose sum is σ = 12529233444. Its totient is φ = 5719174560.

The previous prime is 8626423189. The next prime is 8626423283. The reversal of 8626423257 is 7523246268.

It can be written as a sum of positive squares in 2 ways, for example, as 327031056 + 8299392201 = 18084^2 + 91101^2 .

It is not a de Polignac number, because 8626423257 - 2¹² = 8626419161 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (8626421257) 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, 2646138 + ... + 2649395.

It is an arithmetic number, because the mean of its divisors is an integer number (1044102787).

Almost surely, 2^8626423257 is an apocalyptic number.

It is an amenable number.

8626423257 is a deficient number, since it is larger than the sum of its proper divisors (3902810187).

8626423257 is a wasteful number, since it uses less digits than its factorization.

8626423257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5295720 (or 5295717 counting only the distinct ones).

The product of its digits is 967680, while the sum is 45.

The square root of 8626423257 is about 92878.5403470576. The cubic root of 8626423257 is about 2050.8957621720.

The spelling of 8626423257 in words is "eight billion, six hundred twenty-six million, four hundred twenty-three thousand, two hundred fifty-seven".