66331627 has 2 divisors, whose sum is σ = 66331628. Its totient is φ = 66331626.

The previous prime is 66331621. The next prime is 66331663. The reversal of 66331627 is 72613366.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66331627 - 2³ = 66331619 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 66331592 and 66331601.

It is not a weakly prime, because it can be changed into another prime (66331621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33165813 + 33165814.

It is an arithmetic number, because the mean of its divisors is an integer number (33165814).

Almost surely, 2^66331627 is an apocalyptic number.

66331627 is a deficient number, since it is larger than the sum of its proper divisors (1).

66331627 is an equidigital number, since it uses as much as digits as its factorization.

66331627 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27216, while the sum is 34.

The square root of 66331627 is about 8144.4230612119. The cubic root of 66331627 is about 404.7997323129.

The spelling of 66331627 in words is "sixty-six million, three hundred thirty-one thousand, six hundred twenty-seven".