806688763818 has 16 divisors (see below), whose sum is σ = 1843860031680. Its totient is φ = 230482503936.

The previous prime is 806688763817. The next prime is 806688763849. The reversal of 806688763818 is 818367886608.

It is a happy number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (806688763813) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9603437623 + ... + 9603437706.

It is an arithmetic number, because the mean of its divisors is an integer number (115241251980).

Almost surely, 2^806688763818 is an apocalyptic number.

806688763818 is an abundant number, since it is smaller than the sum of its proper divisors (1037171267862).

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

806688763818 is a wasteful number, since it uses less digits than its factorization.

806688763818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19206875341.

The product of its (nonzero) digits is 148635648, while the sum is 69.

The spelling of 806688763818 in words is "eight hundred six billion, six hundred eighty-eight million, seven hundred sixty-three thousand, eight hundred eighteen".