805612664 has 8 divisors (see below), whose sum is σ = 1510523760. Its totient is φ = 402806328.

The previous prime is 805612657. The next prime is 805612681. The reversal of 805612664 is 466216508.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50350784 + ... + 50350799.

It is an arithmetic number, because the mean of its divisors is an integer number (188815470).

Almost surely, 2^805612664 is an apocalyptic number.

It is an amenable number.

805612664 is a deficient number, since it is larger than the sum of its proper divisors (704911096).

805612664 is a wasteful number, since it uses less digits than its factorization.

805612664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100701589 (or 100701585 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 38.

The square root of 805612664 is about 28383.3166490458. The cubic root of 805612664 is about 930.4836825720.

The spelling of 805612664 in words is "eight hundred five million, six hundred twelve thousand, six hundred sixty-four".