63669073 has 8 divisors (see below), whose sum is σ = 68774888. Its totient is φ = 58593024.

The previous prime is 63669061. The next prime is 63669077. The reversal of 63669073 is 37096636.

63669073 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 831744 + 62837329 = 912^2 + 7927^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 63669073 - 2¹⁷ = 63538001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (63669077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2886 + ... + 11647.

It is an arithmetic number, because the mean of its divisors is an integer number (8596861).

Almost surely, 2^63669073 is an apocalyptic number.

It is an amenable number.

63669073 is a deficient number, since it is larger than the sum of its proper divisors (5105815).

63669073 is a wasteful number, since it uses less digits than its factorization.

63669073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14883.

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

The square root of 63669073 is about 7979.2902566582. The cubic root of 63669073 is about 399.3093770361.

The spelling of 63669073 in words is "sixty-three million, six hundred sixty-nine thousand, seventy-three".