63690673 has 2 divisors, whose sum is σ = 63690674. Its totient is φ = 63690672.

The previous prime is 63690667. The next prime is 63690713. The reversal of 63690673 is 37609636.

It is an a-pointer prime, because the next prime (63690713) can be obtained adding 63690673 to its sum of digits (40).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61355889 + 2334784 = 7833^2 + 1528^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63690673 is a prime.

It is not a weakly prime, because it can be changed into another prime (63690643) 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, 31845336 + 31845337.

It is an arithmetic number, because the mean of its divisors is an integer number (31845337).

Almost surely, 2^63690673 is an apocalyptic number.

It is an amenable number.

63690673 is a deficient number, since it is larger than the sum of its proper divisors (1).

63690673 is an equidigital number, since it uses as much as digits as its factorization.

63690673 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 122472, while the sum is 40.

The square root of 63690673 is about 7980.6436457218. The cubic root of 63690673 is about 399.3545277241.

The spelling of 63690673 in words is "sixty-three million, six hundred ninety thousand, six hundred seventy-three".