66253003 has 2 divisors, whose sum is σ = 66253004. Its totient is φ = 66253002.

The previous prime is 66253001. The next prime is 66253013. The reversal of 66253003 is 30035266.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66253003 - 2¹ = 66253001 is a prime.

Together with 66253001, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (66253001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33126501 + 33126502.

It is an arithmetic number, because the mean of its divisors is an integer number (33126502).

Almost surely, 2^66253003 is an apocalyptic number.

66253003 is a deficient number, since it is larger than the sum of its proper divisors (1).

66253003 is an equidigital number, since it uses as much as digits as its factorization.

66253003 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3240, while the sum is 25.

The square root of 66253003 is about 8139.5947687830. The cubic root of 66253003 is about 404.6397304209.

Adding to 66253003 its reverse (30035266), we get a palindrome (96288269).

The spelling of 66253003 in words is "sixty-six million, two hundred fifty-three thousand, three".