827641 has 4 divisors (see below), whose sum is σ = 832000. Its totient is φ = 823284.

The previous prime is 827639. The next prime is 827677. The reversal of 827641 is 146728.

827641 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 827641 - 2¹ = 827639 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (827681) 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, 1881 + ... + 2278.

It is an arithmetic number, because the mean of its divisors is an integer number (208000).

827641 is a Friedman number, since it can be written as 8^4+2+(6+1)^7, using all its digits and the basic arithmetic operations.

2⁸²⁷⁶⁴¹ is an apocalyptic number.

It is an amenable number.

827641 is a deficient number, since it is larger than the sum of its proper divisors (4359).

827641 is a wasteful number, since it uses less digits than its factorization.

827641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4358.

The product of its digits is 2688, while the sum is 28.

The square root of 827641 is about 909.7477672410. The cubic root of 827641 is about 93.8888455249. Note that the first 4 decimals are identical.

The spelling of 827641 in words is "eight hundred twenty-seven thousand, six hundred forty-one".