8647879007 has 4 divisors (see below), whose sum is σ = 8776951896. Its totient is φ = 8518806120.

The previous prime is 8647879003. The next prime is 8647879033. The reversal of 8647879007 is 7009787468.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 8647879007 - 2² = 8647879003 is a prime.

It is a super-2 number, since 2×8647879007² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8647879003) 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, 64536344 + ... + 64536477.

It is an arithmetic number, because the mean of its divisors is an integer number (2194237974).

Almost surely, 2^8647879007 is an apocalyptic number.

8647879007 is a deficient number, since it is larger than the sum of its proper divisors (129072889).

8647879007 is a wasteful number, since it uses less digits than its factorization.

8647879007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129072888.

The product of its (nonzero) digits is 4741632, while the sum is 56.

The square root of 8647879007 is about 92993.9729606172. The cubic root of 8647879007 is about 2052.5946924524.

The spelling of 8647879007 in words is "eight billion, six hundred forty-seven million, eight hundred seventy-nine thousand, seven".