826145 has 4 divisors (see below), whose sum is σ = 991380. Its totient is φ = 660912.

The previous prime is 826129. The next prime is 826151. The reversal of 826145 is 541628.

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 262144 + 564001 = 512^2 + 751^2 .

It is a cyclic number.

It is not a de Polignac number, because 826145 - 2⁴ = 826129 is a prime.

It is a super-2 number, since 2×826145² = 1365031122050, which contains 22 as substring.

It is a Curzon number.

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, 82610 + ... + 82619.

It is an arithmetic number, because the mean of its divisors is an integer number (247845).

2⁸²⁶¹⁴⁵ is an apocalyptic number.

It is an amenable number.

826145 is a deficient number, since it is larger than the sum of its proper divisors (165235).

826145 is a wasteful number, since it uses less digits than its factorization.

826145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165234.

The product of its digits is 1920, while the sum is 26.

The square root of 826145 is about 908.9251894408. The cubic root of 826145 is about 93.8322419065.

The spelling of 826145 in words is "eight hundred twenty-six thousand, one hundred forty-five".