720200623 has 4 divisors (see below), whose sum is σ = 733789368. Its totient is φ = 706611880.

The previous prime is 720200573. The next prime is 720200627. The reversal of 720200623 is 326002027.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 326002027 = 13 ⋅25077079.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-720200623 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 720200594 and 720200603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (720200627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6794293 + ... + 6794398.

It is an arithmetic number, because the mean of its divisors is an integer number (183447342).

Almost surely, 2^720200623 is an apocalyptic number.

720200623 is a deficient number, since it is larger than the sum of its proper divisors (13588745).

720200623 is a wasteful number, since it uses less digits than its factorization.

720200623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13588744.

The product of its (nonzero) digits is 1008, while the sum is 22.

The square root of 720200623 is about 26836.5538584968. The cubic root of 720200623 is about 896.3641890680.

The spelling of 720200623 in words is "seven hundred twenty million, two hundred thousand, six hundred twenty-three".