814445 has 4 divisors (see below), whose sum is σ = 977340. Its totient is φ = 651552.

The previous prime is 814423. The next prime is 814447. The reversal of 814445 is 544418.

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

It can be written as a sum of positive squares in 2 ways, for example, as 268324 + 546121 = 518^2 + 739^2 .

It is a cyclic number.

It is not a de Polignac number, because 814445 - 2⁶ = 814381 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (814447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81440 + ... + 81449.

It is an arithmetic number, because the mean of its divisors is an integer number (244335).

2⁸¹⁴⁴⁴⁵ is an apocalyptic number.

It is an amenable number.

814445 is a deficient number, since it is larger than the sum of its proper divisors (162895).

814445 is a wasteful number, since it uses less digits than its factorization.

814445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162894.

The product of its digits is 2560, while the sum is 26.

The square root of 814445 is about 902.4660658440. The cubic root of 814445 is about 93.3871783973.

The spelling of 814445 in words is "eight hundred fourteen thousand, four hundred forty-five".