720063973 has 4 divisors (see below), whose sum is σ = 720144108. Its totient is φ = 719983840.

The previous prime is 720063937. The next prime is 720063983. The reversal of 720063973 is 379360027.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 379360027 = 1987 ⋅190921.

It can be written as a sum of positive squares in 2 ways, for example, as 169598529 + 550465444 = 13023^2 + 23462^2 .

It is a cyclic number.

It is not a de Polignac number, because 720063973 - 2¹³ = 720055781 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (720063983) 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, 24598 + ... + 45223.

It is an arithmetic number, because the mean of its divisors is an integer number (180036027).

Almost surely, 2^720063973 is an apocalyptic number.

It is an amenable number.

720063973 is a deficient number, since it is larger than the sum of its proper divisors (80135).

720063973 is a wasteful number, since it uses less digits than its factorization.

720063973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80134.

The product of its (nonzero) digits is 47628, while the sum is 37.

The square root of 720063973 is about 26834.0077699922. The cubic root of 720063973 is about 896.3074937943.

The spelling of 720063973 in words is "seven hundred twenty million, sixty-three thousand, nine hundred seventy-three".