987946633 has 2 divisors, whose sum is σ = 987946634. Its totient is φ = 987946632.

The previous prime is 987946607. The next prime is 987946637. The reversal of 987946633 is 336649789.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 832495609 + 155451024 = 28853^2 + 12468^2 .

It is a cyclic number.

It is not a de Polignac number, because 987946633 - 2⁹ = 987946121 is a prime.

It is not a weakly prime, because it can be changed into another prime (987946637) 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, 493973316 + 493973317.

It is an arithmetic number, because the mean of its divisors is an integer number (493973317).

Almost surely, 2^987946633 is an apocalyptic number.

It is an amenable number.

987946633 is a deficient number, since it is larger than the sum of its proper divisors (1).

987946633 is an equidigital number, since it uses as much as digits as its factorization.

987946633 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5878656, while the sum is 55.

The square root of 987946633 is about 31431.6183643159. The cubic root of 987946633 is about 995.9659593991.

The spelling of 987946633 in words is "nine hundred eighty-seven million, nine hundred forty-six thousand, six hundred thirty-three".