845722 has 4 divisors (see below), whose sum is σ = 1268586. Its totient is φ = 422860.

The previous prime is 845717. The next prime is 845723. The reversal of 845722 is 227548.

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., 447561 + 398161 = 669^2 + 631^2 .

It is not an unprimeable number, because it can be changed into a prime (845723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211429 + ... + 211432.

2⁸⁴⁵⁷²² is an apocalyptic number.

845722 is a deficient number, since it is larger than the sum of its proper divisors (422864).

845722 is a wasteful number, since it uses less digits than its factorization.

845722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422863.

The product of its digits is 4480, while the sum is 28.

The square root of 845722 is about 919.6314479181. The cubic root of 845722 is about 94.5676381848.

The spelling of 845722 in words is "eight hundred forty-five thousand, seven hundred twenty-two".