66483971 has 2 divisors, whose sum is σ = 66483972. Its totient is φ = 66483970.

The previous prime is 66483959. The next prime is 66484003. The reversal of 66483971 is 17938466.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66483971 - 2¹⁴ = 66467587 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (66485971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33241985 + 33241986.

It is an arithmetic number, because the mean of its divisors is an integer number (33241986).

Almost surely, 2^66483971 is an apocalyptic number.

66483971 is a deficient number, since it is larger than the sum of its proper divisors (1).

66483971 is an equidigital number, since it uses as much as digits as its factorization.

66483971 is an evil number, because the sum of its binary digits is even.

The product of its digits is 217728, while the sum is 44.

The square root of 66483971 is about 8153.7703548726. The cubic root of 66483971 is about 405.1093968561.

The spelling of 66483971 in words is "sixty-six million, four hundred eighty-three thousand, nine hundred seventy-one".