63000073 has 4 divisors (see below), whose sum is σ = 63169348. Its totient is φ = 62830800.

The previous prime is 63000061. The next prime is 63000083. The reversal of 63000073 is 37000036.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 43401744 + 19598329 = 6588^2 + 4427^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63000073 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 63000073.

It is not an unprimeable number, because it can be changed into a prime (63000043) 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 in 3 ways as a sum of consecutive naturals, for example, 84078 + ... + 84823.

It is an arithmetic number, because the mean of its divisors is an integer number (15792337).

Almost surely, 2^63000073 is an apocalyptic number.

It is an amenable number.

63000073 is a deficient number, since it is larger than the sum of its proper divisors (169275).

63000073 is a wasteful number, since it uses less digits than its factorization.

63000073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169274.

The product of its (nonzero) digits is 378, while the sum is 19.

The square root of 63000073 is about 7937.2585317602. The cubic root of 63000073 is about 397.9058744780.

The spelling of 63000073 in words is "sixty-three million, seventy-three", and thus it is an aban number and an uban number.