66298471 has 2 divisors, whose sum is σ = 66298472. Its totient is φ = 66298470.

The previous prime is 66298447. The next prime is 66298481. The reversal of 66298471 is 17489266.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66298471 - 2¹¹ = 66296423 is a prime.

It is a super-3 number, since 3×66298471³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66298481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33149235 + 33149236.

It is an arithmetic number, because the mean of its divisors is an integer number (33149236).

Almost surely, 2^66298471 is an apocalyptic number.

66298471 is a deficient number, since it is larger than the sum of its proper divisors (1).

66298471 is an equidigital number, since it uses as much as digits as its factorization.

66298471 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 66298471 is about 8142.3873034878. The cubic root of 66298471 is about 404.7322744127.

The spelling of 66298471 in words is "sixty-six million, two hundred ninety-eight thousand, four hundred seventy-one".