66052717 has 2 divisors, whose sum is σ = 66052718. Its totient is φ = 66052716.

The previous prime is 66052699. The next prime is 66052741. The reversal of 66052717 is 71725066.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 63584676 + 2468041 = 7974^2 + 1571^2 .

It is a cyclic number.

It is not a de Polignac number, because 66052717 - 2²³ = 57664109 is a prime.

It is a super-2 number, since 2×66052717² = 8725922846164178, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66052747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33026358 + 33026359.

It is an arithmetic number, because the mean of its divisors is an integer number (33026359).

Almost surely, 2^66052717 is an apocalyptic number.

It is an amenable number.

66052717 is a deficient number, since it is larger than the sum of its proper divisors (1).

66052717 is an equidigital number, since it uses as much as digits as its factorization.

66052717 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17640, while the sum is 34.

The square root of 66052717 is about 8127.2822640782. The cubic root of 66052717 is about 404.2315704225.

The spelling of 66052717 in words is "sixty-six million, fifty-two thousand, seven hundred seventeen".