63066691 has 2 divisors, whose sum is σ = 63066692. Its totient is φ = 63066690.

The previous prime is 63066649. The next prime is 63066701. The reversal of 63066691 is 19666036.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63066691 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 63066691.

It is not a weakly prime, because it can be changed into another prime (63016691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31533345 + 31533346.

It is an arithmetic number, because the mean of its divisors is an integer number (31533346).

Almost surely, 2^63066691 is an apocalyptic number.

63066691 is a deficient number, since it is larger than the sum of its proper divisors (1).

63066691 is an equidigital number, since it uses as much as digits as its factorization.

63066691 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34992, while the sum is 37.

The square root of 63066691 is about 7941.4539600756. The cubic root of 63066691 is about 398.0460772558.

The spelling of 63066691 in words is "sixty-three million, sixty-six thousand, six hundred ninety-one".