805807506664 has 16 divisors (see below), whose sum is σ = 1515810542400. Its totient is φ = 401591362032.

The previous prime is 805807506661. The next prime is 805807506667. The reversal of 805807506664 is 466605708508.

It is an interprime number because it is at equal distance from previous prime (805807506661) and next prime (805807506667).

It is not an unprimeable number, because it can be changed into a prime (805807506661) 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, 164046304 + ... + 164051215.

It is an arithmetic number, because the mean of its divisors is an integer number (94738158900).

Almost surely, 2^805807506664 is an apocalyptic number.

It is an amenable number.

805807506664 is a deficient number, since it is larger than the sum of its proper divisors (710003035736).

805807506664 is a wasteful number, since it uses less digits than its factorization.

805807506664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328097832 (or 328097828 counting only the distinct ones).

The product of its (nonzero) digits is 9676800, while the sum is 55.

The spelling of 805807506664 in words is "eight hundred five billion, eight hundred seven million, five hundred six thousand, six hundred sixty-four".