960556021 has 2 divisors, whose sum is σ = 960556022. Its totient is φ = 960556020.

The previous prime is 960556007. The next prime is 960556087. The reversal of 960556021 is 120655069.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 798910225 + 161645796 = 28265^2 + 12714^2 .

It is a cyclic number.

It is not a de Polignac number, because 960556021 - 2⁵ = 960555989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (960556721) 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, 480278010 + 480278011.

It is an arithmetic number, because the mean of its divisors is an integer number (480278011).

Almost surely, 2^960556021 is an apocalyptic number.

It is an amenable number.

960556021 is a deficient number, since it is larger than the sum of its proper divisors (1).

960556021 is an equidigital number, since it uses as much as digits as its factorization.

960556021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16200, while the sum is 34.

The square root of 960556021 is about 30992.8382211117. The cubic root of 960556021 is about 986.6752465445.

The spelling of 960556021 in words is "nine hundred sixty million, five hundred fifty-six thousand, twenty-one".