885661547 has 2 divisors, whose sum is σ = 885661548. Its totient is φ = 885661546.

The previous prime is 885661531. The next prime is 885661549. The reversal of 885661547 is 745166588.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 885661547 - 2⁴ = 885661531 is a prime.

Together with 885661549, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 885661495 and 885661504.

It is not a weakly prime, because it can be changed into another prime (885661549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 442830773 + 442830774.

It is an arithmetic number, because the mean of its divisors is an integer number (442830774).

Almost surely, 2^885661547 is an apocalyptic number.

885661547 is a deficient number, since it is larger than the sum of its proper divisors (1).

885661547 is an equidigital number, since it uses as much as digits as its factorization.

885661547 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1612800, while the sum is 50.

The square root of 885661547 is about 29760.0663137702. The cubic root of 885661547 is about 960.3346442566.

The spelling of 885661547 in words is "eight hundred eighty-five million, six hundred sixty-one thousand, five hundred forty-seven".