500720973 has 4 divisors (see below), whose sum is σ = 667627968. Its totient is φ = 333813980.

The previous prime is 500720923. The next prime is 500720999. The reversal of 500720973 is 379027005.

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 500720973 - 2⁹ = 500720461 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (500720903) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83453493 + ... + 83453498.

It is an arithmetic number, because the mean of its divisors is an integer number (166906992).

Almost surely, 2^500720973 is an apocalyptic number.

It is an amenable number.

500720973 is a deficient number, since it is larger than the sum of its proper divisors (166906995).

500720973 is a wasteful number, since it uses less digits than its factorization.

500720973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166906994.

The product of its (nonzero) digits is 13230, while the sum is 33.

The square root of 500720973 is about 22376.7954139997. The cubic root of 500720973 is about 794.0818338672.

Adding to 500720973 its reverse (379027005), we get a palindrome (879747978).

The spelling of 500720973 in words is "five hundred million, seven hundred twenty thousand, nine hundred seventy-three".