63265661 has 2 divisors, whose sum is σ = 63265662. Its totient is φ = 63265660.

The previous prime is 63265651. The next prime is 63265703. The reversal of 63265661 is 16656236.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 58813561 + 4452100 = 7669^2 + 2110^2 .

It is a cyclic number.

It is not a de Polignac number, because 63265661 - 2¹⁰ = 63264637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63265651) 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, 31632830 + 31632831.

It is an arithmetic number, because the mean of its divisors is an integer number (31632831).

Almost surely, 2^63265661 is an apocalyptic number.

It is an amenable number.

63265661 is a deficient number, since it is larger than the sum of its proper divisors (1).

63265661 is an equidigital number, since it uses as much as digits as its factorization.

63265661 is an odious number, because the sum of its binary digits is odd.

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

The square root of 63265661 is about 7953.9713979873. The cubic root of 63265661 is about 398.4642382189.

The spelling of 63265661 in words is "sixty-three million, two hundred sixty-five thousand, six hundred sixty-one".