66117463 has 2 divisors, whose sum is σ = 66117464. Its totient is φ = 66117462.

The previous prime is 66117427. The next prime is 66117481. The reversal of 66117463 is 36471166.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66117463 - 2⁹ = 66116951 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66117413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33058731 + 33058732.

It is an arithmetic number, because the mean of its divisors is an integer number (33058732).

Almost surely, 2^66117463 is an apocalyptic number.

66117463 is a deficient number, since it is larger than the sum of its proper divisors (1).

66117463 is an equidigital number, since it uses as much as digits as its factorization.

66117463 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18144, while the sum is 34.

The square root of 66117463 is about 8131.2645388033. The cubic root of 66117463 is about 404.3636055180.

The spelling of 66117463 in words is "sixty-six million, one hundred seventeen thousand, four hundred sixty-three".