66372983 has 2 divisors, whose sum is σ = 66372984. Its totient is φ = 66372982.

The previous prime is 66372979. The next prime is 66373019. The reversal of 66372983 is 38927366.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66372983 - 2² = 66372979 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66372283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33186491 + 33186492.

It is an arithmetic number, because the mean of its divisors is an integer number (33186492).

Almost surely, 2^66372983 is an apocalyptic number.

66372983 is a deficient number, since it is larger than the sum of its proper divisors (1).

66372983 is an equidigital number, since it uses as much as digits as its factorization.

66372983 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 326592, while the sum is 44.

The square root of 66372983 is about 8146.9615808595. The cubic root of 66372983 is about 404.8838421135.

The spelling of 66372983 in words is "sixty-six million, three hundred seventy-two thousand, nine hundred eighty-three".