845663912 has 16 divisors (see below), whose sum is σ = 1678891860. Its totient is φ = 397959424.

The previous prime is 845663899. The next prime is 845663921. The reversal of 845663912 is 219366548.

It can be written as a sum of positive squares in 2 ways, for example, as 806900836 + 38763076 = 28406^2 + 6226^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3108923 + ... + 3109194.

Almost surely, 2^845663912 is an apocalyptic number.

It is an amenable number.

845663912 is a deficient number, since it is larger than the sum of its proper divisors (833227948).

845663912 is a wasteful number, since it uses less digits than its factorization.

845663912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6218140 (or 6218136 counting only the distinct ones).

The product of its digits is 311040, while the sum is 44.

The square root of 845663912 is about 29080.3010988538. The cubic root of 845663912 is about 945.6547302465.

The spelling of 845663912 in words is "eight hundred forty-five million, six hundred sixty-three thousand, nine hundred twelve".