720004787 has 4 divisors (see below), whose sum is σ = 723982896. Its totient is φ = 716026680.

The previous prime is 720004781. The next prime is 720004889. The reversal of 720004787 is 787400027.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 720004787 - 2⁸ = 720004531 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (720004781) 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, 1988783 + ... + 1989144.

It is an arithmetic number, because the mean of its divisors is an integer number (180995724).

Almost surely, 2^720004787 is an apocalyptic number.

720004787 is a deficient number, since it is larger than the sum of its proper divisors (3978109).

720004787 is a wasteful number, since it uses less digits than its factorization.

720004787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3978108.

The product of its (nonzero) digits is 21952, while the sum is 35.

The square root of 720004787 is about 26832.9049303276. The cubic root of 720004787 is about 896.2829356482.

The spelling of 720004787 in words is "seven hundred twenty million, four thousand, seven hundred eighty-seven".