66067451 has 2 divisors, whose sum is σ = 66067452. Its totient is φ = 66067450.

The previous prime is 66067447. The next prime is 66067493. The reversal of 66067451 is 15476066.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66067451 - 2² = 66067447 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (66067411) 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, 33033725 + 33033726.

It is an arithmetic number, because the mean of its divisors is an integer number (33033726).

Almost surely, 2^66067451 is an apocalyptic number.

66067451 is a deficient number, since it is larger than the sum of its proper divisors (1).

66067451 is an equidigital number, since it uses as much as digits as its factorization.

66067451 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 66067451 is about 8128.1886666096. The cubic root of 66067451 is about 404.2616247258.

The spelling of 66067451 in words is "sixty-six million, sixty-seven thousand, four hundred fifty-one".