66717463 has 2 divisors, whose sum is σ = 66717464. Its totient is φ = 66717462.

The previous prime is 66717439. The next prime is 66717481. The reversal of 66717463 is 36471766.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66717463 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66717433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33358731 + 33358732.

It is an arithmetic number, because the mean of its divisors is an integer number (33358732).

Almost surely, 2^66717463 is an apocalyptic number.

66717463 is a deficient number, since it is larger than the sum of its proper divisors (1).

66717463 is an equidigital number, since it uses as much as digits as its factorization.

66717463 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 127008, while the sum is 40.

The square root of 66717463 is about 8168.0758444079. The cubic root of 66717463 is about 405.5830914131.

The spelling of 66717463 in words is "sixty-six million, seven hundred seventeen thousand, four hundred sixty-three".