66405083 has 2 divisors, whose sum is σ = 66405084. Its totient is φ = 66405082.

The previous prime is 66405067. The next prime is 66405127. The reversal of 66405083 is 38050466.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66405083 - 2⁴ = 66405067 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (66405013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33202541 + 33202542.

It is an arithmetic number, because the mean of its divisors is an integer number (33202542).

Almost surely, 2^66405083 is an apocalyptic number.

66405083 is a deficient number, since it is larger than the sum of its proper divisors (1).

66405083 is an equidigital number, since it uses as much as digits as its factorization.

66405083 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 66405083 is about 8148.9314023374. The cubic root of 66405083 is about 404.9491029877.

The spelling of 66405083 in words is "sixty-six million, four hundred five thousand, eighty-three".