8706421813 has 4 divisors (see below), whose sum is σ = 9164654560. Its totient is φ = 8248189068.

The previous prime is 8706421753. The next prime is 8706421819. The reversal of 8706421813 is 3181246078.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8706421813 - 2¹⁷ = 8706290741 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8706421819) 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, 229116345 + ... + 229116382.

It is an arithmetic number, because the mean of its divisors is an integer number (2291163640).

Almost surely, 2^8706421813 is an apocalyptic number.

It is an amenable number.

8706421813 is a deficient number, since it is larger than the sum of its proper divisors (458232747).

8706421813 is a wasteful number, since it uses less digits than its factorization.

8706421813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 458232746.

The product of its (nonzero) digits is 64512, while the sum is 40.

The square root of 8706421813 is about 93308.2087117741. The cubic root of 8706421813 is about 2057.2160380205.

The spelling of 8706421813 in words is "eight billion, seven hundred six million, four hundred twenty-one thousand, eight hundred thirteen".