66037003 has 2 divisors, whose sum is σ = 66037004. Its totient is φ = 66037002.

The previous prime is 66036991. The next prime is 66037007. The reversal of 66037003 is 30073066.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66037003 is a prime.

It is not a weakly prime, because it can be changed into another prime (66037007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33018501 + 33018502.

It is an arithmetic number, because the mean of its divisors is an integer number (33018502).

Almost surely, 2^66037003 is an apocalyptic number.

66037003 is a deficient number, since it is larger than the sum of its proper divisors (1).

66037003 is an equidigital number, since it uses as much as digits as its factorization.

66037003 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2268, while the sum is 25.

The square root of 66037003 is about 8126.3154627420. The cubic root of 66037003 is about 404.1995121970.

The spelling of 66037003 in words is "sixty-six million, thirty-seven thousand, three".