8626420013 has 4 divisors (see below), whose sum is σ = 8626772028. Its totient is φ = 8626068000.

The previous prime is 8626419947. The next prime is 8626420021. The reversal of 8626420013 is 3100246268.

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 3476635369 + 5149784644 = 58963^2 + 71762^2 .

It is a cyclic number.

It is not a de Polignac number, because 8626420013 - 2²² = 8622225709 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8626420513) 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, 136256 + ... + 189257.

It is an arithmetic number, because the mean of its divisors is an integer number (2156693007).

Almost surely, 2^8626420013 is an apocalyptic number.

It is an amenable number.

8626420013 is a deficient number, since it is larger than the sum of its proper divisors (352015).

8626420013 is a wasteful number, since it uses less digits than its factorization.

8626420013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 352014.

The product of its (nonzero) digits is 13824, while the sum is 32.

The square root of 8626420013 is about 92878.5228833878. The cubic root of 8626420013 is about 2050.8955050895.

The spelling of 8626420013 in words is "eight billion, six hundred twenty-six million, four hundred twenty thousand, thirteen".