854621 has 2 divisors, whose sum is σ = 854622. Its totient is φ = 854620.

The previous prime is 854617. The next prime is 854629. The reversal of 854621 is 126458.

854621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 511225 + 343396 = 715^2 + 586^2 .

It is a cyclic number.

It is not a de Polignac number, because 854621 - 2² = 854617 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (854629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 427310 + 427311.

It is an arithmetic number, because the mean of its divisors is an integer number (427311).

2⁸⁵⁴⁶²¹ is an apocalyptic number.

It is an amenable number.

854621 is a deficient number, since it is larger than the sum of its proper divisors (1).

854621 is an equidigital number, since it uses as much as digits as its factorization.

854621 is an evil number, because the sum of its binary digits is even.

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

The square root of 854621 is about 924.4571380005. The cubic root of 854621 is about 94.8981734438.

The spelling of 854621 in words is "eight hundred fifty-four thousand, six hundred twenty-one".