66182497 has 2 divisors, whose sum is σ = 66182498. Its totient is φ = 66182496.

The previous prime is 66182449. The next prime is 66182507. The reversal of 66182497 is 79428166.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52940176 + 13242321 = 7276^2 + 3639^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66182497 is a prime.

It is not a weakly prime, because it can be changed into another prime (66182407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33091248 + 33091249.

It is an arithmetic number, because the mean of its divisors is an integer number (33091249).

Almost surely, 2^66182497 is an apocalyptic number.

It is an amenable number.

66182497 is a deficient number, since it is larger than the sum of its proper divisors (1).

66182497 is an equidigital number, since it uses as much as digits as its factorization.

66182497 is an evil number, because the sum of its binary digits is even.

The product of its digits is 145152, while the sum is 43.

The square root of 66182497 is about 8135.2625649084. The cubic root of 66182497 is about 404.4961411804.

The spelling of 66182497 in words is "sixty-six million, one hundred eighty-two thousand, four hundred ninety-seven".