8991078006 has 32 divisors (see below), whose sum is σ = 18371036160. Its totient is φ = 2932884864.

The previous prime is 8991077999. The next prime is 8991078011. The reversal of 8991078006 is 6008701998.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30370 + ... + 137493.

It is an arithmetic number, because the mean of its divisors is an integer number (574094880).

Almost surely, 2^8991078006 is an apocalyptic number.

8991078006 is an abundant number, since it is smaller than the sum of its proper divisors (9379958154).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8991078006 is a wasteful number, since it uses less digits than its factorization.

8991078006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168060.

The product of its (nonzero) digits is 217728, while the sum is 48.

The square root of 8991078006 is about 94821.2951082192. The cubic root of 8991078006 is about 2079.3962441143.

The spelling of 8991078006 in words is "eight billion, nine hundred ninety-one million, seventy-eight thousand, six".