805664650 has 24 divisors (see below), whose sum is σ = 1712613600. Its totient is φ = 276227760.

The previous prime is 805664627. The next prime is 805664659. The reversal of 805664650 is 56466508.

It is not an unprimeable number, because it can be changed into a prime (805664659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1150600 + ... + 1151299.

It is an arithmetic number, because the mean of its divisors is an integer number (71358900).

Almost surely, 2^805664650 is an apocalyptic number.

805664650 is an abundant number, since it is smaller than the sum of its proper divisors (906948950).

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

805664650 is a wasteful number, since it uses less digits than its factorization.

805664650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2301918 (or 2301913 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 40.

The square root of 805664650 is about 28384.2324187215. The cubic root of 805664650 is about 930.5036967742.

The spelling of 805664650 in words is "eight hundred five million, six hundred sixty-four thousand, six hundred fifty".