66003529 has 2 divisors, whose sum is σ = 66003530. Its totient is φ = 66003528.

The previous prime is 66003493. The next prime is 66003547. The reversal of 66003529 is 92530066.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55428025 + 10575504 = 7445^2 + 3252^2 .

It is a cyclic number.

It is not a de Polignac number, because 66003529 - 2¹⁹ = 65479241 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 66003529.

It is not a weakly prime, because it can be changed into another prime (66003559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33001764 + 33001765.

It is an arithmetic number, because the mean of its divisors is an integer number (33001765).

Almost surely, 2^66003529 is an apocalyptic number.

It is an amenable number.

66003529 is a deficient number, since it is larger than the sum of its proper divisors (1).

66003529 is an equidigital number, since it uses as much as digits as its factorization.

66003529 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9720, while the sum is 31.

The square root of 66003529 is about 8124.2555966685. The cubic root of 66003529 is about 404.1312047298.

The spelling of 66003529 in words is "sixty-six million, three thousand, five hundred twenty-nine".