63623557 has 2 divisors, whose sum is σ = 63623558. Its totient is φ = 63623556.

The previous prime is 63623551. The next prime is 63623569. The reversal of 63623557 is 75532636.

It is a happy number.

63623557 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., 54375876 + 9247681 = 7374^2 + 3041^2 .

It is a cyclic number.

It is not a de Polignac number, because 63623557 - 2¹⁵ = 63590789 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63623551) 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, 31811778 + 31811779.

It is an arithmetic number, because the mean of its divisors is an integer number (31811779).

Almost surely, 2^63623557 is an apocalyptic number.

It is an amenable number.

63623557 is a deficient number, since it is larger than the sum of its proper divisors (1).

63623557 is an equidigital number, since it uses as much as digits as its factorization.

63623557 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 113400, while the sum is 37.

The square root of 63623557 is about 7976.4376133710. The cubic root of 63623557 is about 399.2142010609.

The spelling of 63623557 in words is "sixty-three million, six hundred twenty-three thousand, five hundred fifty-seven".