845723066 has 4 divisors (see below), whose sum is σ = 1268584602. Its totient is φ = 422861532.

The previous prime is 845722981. The next prime is 845723069. The reversal of 845723066 is 660327548.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 613800625 + 231922441 = 24775^2 + 15229^2 .

It is not an unprimeable number, because it can be changed into a prime (845723069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211430765 + ... + 211430768.

Almost surely, 2^845723066 is an apocalyptic number.

845723066 is a deficient number, since it is larger than the sum of its proper divisors (422861536).

845723066 is a wasteful number, since it uses less digits than its factorization.

845723066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422861535.

The product of its (nonzero) digits is 241920, while the sum is 41.

The square root of 845723066 is about 29081.3181613214. The cubic root of 845723066 is about 945.6767791774.

The spelling of 845723066 in words is "eight hundred forty-five million, seven hundred twenty-three thousand, sixty-six".