856632353 has 2 divisors, whose sum is σ = 856632354. Its totient is φ = 856632352.

The previous prime is 856632323. The next prime is 856632373. The reversal of 856632353 is 353236658.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 742399009 + 114233344 = 27247^2 + 10688^2 .

It is a cyclic number.

It is not a de Polignac number, because 856632353 - 2⁶ = 856632289 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 856632353.

It is not a weakly prime, because it can be changed into another prime (856632323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 428316176 + 428316177.

It is an arithmetic number, because the mean of its divisors is an integer number (428316177).

Almost surely, 2^856632353 is an apocalyptic number.

It is an amenable number.

856632353 is a deficient number, since it is larger than the sum of its proper divisors (1).

856632353 is an equidigital number, since it uses as much as digits as its factorization.

856632353 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 388800, while the sum is 41.

The square root of 856632353 is about 29268.2823718783. The cubic root of 856632353 is about 949.7256282449.

The spelling of 856632353 in words is "eight hundred fifty-six million, six hundred thirty-two thousand, three hundred fifty-three".