63669061 has 2 divisors, whose sum is σ = 63669062. Its totient is φ = 63669060.

The previous prime is 63669049. The next prime is 63669077. The reversal of 63669061 is 16096636.

63669061 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 60450625 + 3218436 = 7775^2 + 1794^2 .

It is a cyclic number.

It is not a de Polignac number, because 63669061 - 2²³ = 55280453 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 63669061.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63669031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31834530 + 31834531.

It is an arithmetic number, because the mean of its divisors is an integer number (31834531).

Almost surely, 2^63669061 is an apocalyptic number.

It is an amenable number.

63669061 is a deficient number, since it is larger than the sum of its proper divisors (1).

63669061 is an equidigital number, since it uses as much as digits as its factorization.

63669061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34992, while the sum is 37.

The square root of 63669061 is about 7979.2895047116. The cubic root of 63669061 is about 399.3093519495.

It can be divided in two parts, 63 and 669061, that added together give a square (669124 = 818²).

The spelling of 63669061 in words is "sixty-three million, six hundred sixty-nine thousand, sixty-one".