66152417 has 2 divisors, whose sum is σ = 66152418. Its totient is φ = 66152416.

The previous prime is 66152413. The next prime is 66152479. The reversal of 66152417 is 71425166.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 65918161 + 234256 = 8119^2 + 484^2 .

It is a cyclic number.

It is not a de Polignac number, because 66152417 - 2² = 66152413 is a prime.

It is a super-2 number, since 2×66152417² = 8752284549883778, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (66152413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33076208 + 33076209.

It is an arithmetic number, because the mean of its divisors is an integer number (33076209).

Almost surely, 2^66152417 is an apocalyptic number.

It is an amenable number.

66152417 is a deficient number, since it is larger than the sum of its proper divisors (1).

66152417 is an equidigital number, since it uses as much as digits as its factorization.

66152417 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10080, while the sum is 32.

The square root of 66152417 is about 8133.4136129918. The cubic root of 66152417 is about 404.4348506163.

The spelling of 66152417 in words is "sixty-six million, one hundred fifty-two thousand, four hundred seventeen".