720804633 has 4 divisors (see below), whose sum is σ = 961072848. Its totient is φ = 480536420.

The previous prime is 720804631. The next prime is 720804661. The reversal of 720804633 is 336408027.

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, and also an emirpimes, since its reverse is a distinct semiprime: 336408027 = 3 ⋅112136009.

It is a cyclic number.

It is not a de Polignac number, because 720804633 - 2¹ = 720804631 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 720804594 and 720804603.

It is not an unprimeable number, because it can be changed into a prime (720804631) 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, 120134103 + ... + 120134108.

It is an arithmetic number, because the mean of its divisors is an integer number (240268212).

Almost surely, 2^720804633 is an apocalyptic number.

It is an amenable number.

720804633 is a deficient number, since it is larger than the sum of its proper divisors (240268215).

720804633 is a wasteful number, since it uses less digits than its factorization.

720804633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240268214.

The product of its (nonzero) digits is 24192, while the sum is 33.

The square root of 720804633 is about 26847.8049940773. The cubic root of 720804633 is about 896.6147033606.

The spelling of 720804633 in words is "seven hundred twenty million, eight hundred four thousand, six hundred thirty-three".