854274643 has 2 divisors, whose sum is σ = 854274644. Its totient is φ = 854274642.

The previous prime is 854274623. The next prime is 854274661. The reversal of 854274643 is 346472458.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 854274643 - 2⁹ = 854274131 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 854274643.

It is not a weakly prime, because it can be changed into another prime (854274623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 427137321 + 427137322.

It is an arithmetic number, because the mean of its divisors is an integer number (427137322).

Almost surely, 2^854274643 is an apocalyptic number.

854274643 is a deficient number, since it is larger than the sum of its proper divisors (1).

854274643 is an equidigital number, since it uses as much as digits as its factorization.

854274643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 645120, while the sum is 43.

The square root of 854274643 is about 29227.9770596598. The cubic root of 854274643 is about 948.8535174158.

The spelling of 854274643 in words is "eight hundred fifty-four million, two hundred seventy-four thousand, six hundred forty-three".