66474503 has 2 divisors, whose sum is σ = 66474504. Its totient is φ = 66474502.

The previous prime is 66474487. The next prime is 66474511. The reversal of 66474503 is 30547466.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66474503 - 2⁴ = 66474487 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66474523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33237251 + 33237252.

It is an arithmetic number, because the mean of its divisors is an integer number (33237252).

Almost surely, 2^66474503 is an apocalyptic number.

66474503 is a deficient number, since it is larger than the sum of its proper divisors (1).

66474503 is an equidigital number, since it uses as much as digits as its factorization.

66474503 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60480, while the sum is 35.

The square root of 66474503 is about 8153.1897438978. The cubic root of 66474503 is about 405.0901653642.

The spelling of 66474503 in words is "sixty-six million, four hundred seventy-four thousand, five hundred three".