63700073 has 4 divisors (see below), whose sum is σ = 63721728. Its totient is φ = 63678420.

The previous prime is 63700067. The next prime is 63700097. The reversal of 63700073 is 37000736.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 63700073 - 2¹⁴ = 63683689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63700873) 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 in 3 ways as a sum of consecutive naturals, for example, 5561 + ... + 12582.

It is an arithmetic number, because the mean of its divisors is an integer number (15930432).

Almost surely, 2^63700073 is an apocalyptic number.

It is an amenable number.

63700073 is a deficient number, since it is larger than the sum of its proper divisors (21655).

63700073 is a wasteful number, since it uses less digits than its factorization.

63700073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21654.

The product of its (nonzero) digits is 2646, while the sum is 26.

The square root of 63700073 is about 7981.2325489238. The cubic root of 63700073 is about 399.3741734468.

The spelling of 63700073 in words is "sixty-three million, seven hundred thousand, seventy-three".