66736003 has 2 divisors, whose sum is σ = 66736004. Its totient is φ = 66736002.

The previous prime is 66736001. The next prime is 66736031. The reversal of 66736003 is 30063766.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66736003 - 2¹ = 66736001 is a prime.

Together with 66736001, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (66736001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33368001 + 33368002.

It is an arithmetic number, because the mean of its divisors is an integer number (33368002).

Almost surely, 2^66736003 is an apocalyptic number.

66736003 is a deficient number, since it is larger than the sum of its proper divisors (1).

66736003 is an equidigital number, since it uses as much as digits as its factorization.

66736003 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13608, while the sum is 31.

The square root of 66736003 is about 8169.2106717846. The cubic root of 66736003 is about 405.6206568608.

Adding to 66736003 its reverse (30063766), we get a palindrome (96799769).

The spelling of 66736003 in words is "sixty-six million, seven hundred thirty-six thousand, three".