851663465 has 16 divisors (see below), whose sum is σ = 1070722560. Its totient is φ = 649503360.

The previous prime is 851663441. The next prime is 851663471. The reversal of 851663465 is 564366158.

851663465 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 851663465 - 2⁶ = 851663401 is a prime.

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, 30620 + ... + 51389.

It is an arithmetic number, because the mean of its divisors is an integer number (66920160).

Almost surely, 2^851663465 is an apocalyptic number.

It is an amenable number.

851663465 is a deficient number, since it is larger than the sum of its proper divisors (219059095).

851663465 is a wasteful number, since it uses less digits than its factorization.

851663465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82112.

The product of its digits is 518400, while the sum is 44.

The square root of 851663465 is about 29183.2737197183. The cubic root of 851663465 is about 947.8857747359.

The spelling of 851663465 in words is "eight hundred fifty-one million, six hundred sixty-three thousand, four hundred sixty-five".