64203533 has 2 divisors, whose sum is σ = 64203534. Its totient is φ = 64203532.

The previous prime is 64203523. The next prime is 64203583. The reversal of 64203533 is 33530246.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 56821444 + 7382089 = 7538^2 + 2717^2 .

It is a cyclic number.

It is not a de Polignac number, because 64203533 - 2⁸ = 64203277 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64203523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32101766 + 32101767.

It is an arithmetic number, because the mean of its divisors is an integer number (32101767).

Almost surely, 2^64203533 is an apocalyptic number.

It is an amenable number.

64203533 is a deficient number, since it is larger than the sum of its proper divisors (1).

64203533 is an equidigital number, since it uses as much as digits as its factorization.

64203533 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6480, while the sum is 26.

The square root of 64203533 is about 8012.7107148580. The cubic root of 64203533 is about 400.4235783784.

Adding to 64203533 its reverse (33530246), we get a palindrome (97733779).

The spelling of 64203533 in words is "sixty-four million, two hundred three thousand, five hundred thirty-three".