63664229 has 2 divisors, whose sum is σ = 63664230. Its totient is φ = 63664228.

The previous prime is 63664199. The next prime is 63664261. The reversal of 63664229 is 92246636.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61199329 + 2464900 = 7823^2 + 1570^2 .

It is a cyclic number.

It is not a de Polignac number, because 63664229 - 2¹⁶ = 63598693 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 63664192 and 63664201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63664429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31832114 + 31832115.

It is an arithmetic number, because the mean of its divisors is an integer number (31832115).

Almost surely, 2^63664229 is an apocalyptic number.

It is an amenable number.

63664229 is a deficient number, since it is larger than the sum of its proper divisors (1).

63664229 is an equidigital number, since it uses as much as digits as its factorization.

63664229 is an evil number, because the sum of its binary digits is even.

The product of its digits is 93312, while the sum is 38.

The square root of 63664229 is about 7978.9867151161. The cubic root of 63664229 is about 399.2992501744.

The spelling of 63664229 in words is "sixty-three million, six hundred sixty-four thousand, two hundred twenty-nine".