2063606561 has 4 divisors (see below), whose sum is σ = 2064095124. Its totient is φ = 2063118000.

The previous prime is 2063606537. The next prime is 2063606579. The reversal of 2063606561 is 1656063602.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1007681536 + 1055925025 = 31744^2 + 32495^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2063606561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2063696561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 237890 + ... + 246411.

It is an arithmetic number, because the mean of its divisors is an integer number (516023781).

Almost surely, 2^2063606561 is an apocalyptic number.

It is an amenable number.

2063606561 is a deficient number, since it is larger than the sum of its proper divisors (488563).

2063606561 is an equidigital number, since it uses as much as digits as its factorization.

2063606561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 488562.

The product of its (nonzero) digits is 38880, while the sum is 35.

The square root of 2063606561 is about 45426.9365134828. The cubic root of 2063606561 is about 1273.1384467246.

The spelling of 2063606561 in words is "two billion, sixty-three million, six hundred six thousand, five hundred sixty-one".