66297029 has 2 divisors, whose sum is σ = 66297030. Its totient is φ = 66297028.

The previous prime is 66296981. The next prime is 66297043. The reversal of 66297029 is 92079266.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 64032004 + 2265025 = 8002^2 + 1505^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66297029 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66197029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33148514 + 33148515.

It is an arithmetic number, because the mean of its divisors is an integer number (33148515).

Almost surely, 2^66297029 is an apocalyptic number.

It is an amenable number.

66297029 is a deficient number, since it is larger than the sum of its proper divisors (1).

66297029 is an equidigital number, since it uses as much as digits as its factorization.

66297029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 81648, while the sum is 41.

The square root of 66297029 is about 8142.2987540375. The cubic root of 66297029 is about 404.7293400657.

The spelling of 66297029 in words is "sixty-six million, two hundred ninety-seven thousand, twenty-nine".