66250027 has 2 divisors, whose sum is σ = 66250028. Its totient is φ = 66250026.

The previous prime is 66249983. The next prime is 66250073. The reversal of 66250027 is 72005266.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66250027 - 2¹⁹ = 65725739 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 66249977 and 66250004.

It is not a weakly prime, because it can be changed into another prime (66250727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33125013 + 33125014.

It is an arithmetic number, because the mean of its divisors is an integer number (33125014).

Almost surely, 2^66250027 is an apocalyptic number.

66250027 is a deficient number, since it is larger than the sum of its proper divisors (1).

66250027 is an equidigital number, since it uses as much as digits as its factorization.

66250027 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 66250027 is about 8139.4119566465. The cubic root of 66250027 is about 404.6336716974.

The spelling of 66250027 in words is "sixty-six million, two hundred fifty thousand, twenty-seven".