66032137 has 2 divisors, whose sum is σ = 66032138. Its totient is φ = 66032136.

The previous prime is 66032123. The next prime is 66032143. The reversal of 66032137 is 73123066.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 65999376 + 32761 = 8124^2 + 181^2 .

It is a cyclic number.

It is not a de Polignac number, because 66032137 - 2⁷ = 66032009 is a prime.

It is not a weakly prime, because it can be changed into another prime (66032147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33016068 + 33016069.

It is an arithmetic number, because the mean of its divisors is an integer number (33016069).

Almost surely, 2^66032137 is an apocalyptic number.

It is an amenable number.

66032137 is a deficient number, since it is larger than the sum of its proper divisors (1).

66032137 is an equidigital number, since it uses as much as digits as its factorization.

66032137 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536, while the sum is 28.

The square root of 66032137 is about 8126.0160595460. The cubic root of 66032137 is about 404.1895840101.

The spelling of 66032137 in words is "sixty-six million, thirty-two thousand, one hundred thirty-seven".