66452297 has 2 divisors, whose sum is σ = 66452298. Its totient is φ = 66452296.

The previous prime is 66452279. The next prime is 66452341. The reversal of 66452297 is 79225466.

Together with previous prime (66452279) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61528336 + 4923961 = 7844^2 + 2219^2 .

It is a cyclic number.

It is not a de Polignac number, because 66452297 - 2²⁰ = 65403721 is a prime.

It is not a weakly prime, because it can be changed into another prime (66452227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33226148 + 33226149.

It is an arithmetic number, because the mean of its divisors is an integer number (33226149).

Almost surely, 2^66452297 is an apocalyptic number.

It is an amenable number.

66452297 is a deficient number, since it is larger than the sum of its proper divisors (1).

66452297 is an equidigital number, since it uses as much as digits as its factorization.

66452297 is an evil number, because the sum of its binary digits is even.

The product of its digits is 181440, while the sum is 41.

The square root of 66452297 is about 8151.8278318424. The cubic root of 66452297 is about 405.0450531600.

The spelling of 66452297 in words is "sixty-six million, four hundred fifty-two thousand, two hundred ninety-seven".