720578679 has 8 divisors (see below), whose sum is σ = 962129520. Its totient is φ = 479706816.

The previous prime is 720578647. The next prime is 720578699. The reversal of 720578679 is 976875027.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 720578679 - 2⁵ = 720578647 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (720578699) 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 7 ways as a sum of consecutive naturals, for example, 167262 + ... + 171515.

It is an arithmetic number, because the mean of its divisors is an integer number (120266190).

Almost surely, 2^720578679 is an apocalyptic number.

720578679 is a deficient number, since it is larger than the sum of its proper divisors (241550841).

720578679 is a wasteful number, since it uses less digits than its factorization.

720578679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 339489.

The product of its (nonzero) digits is 1481760, while the sum is 51.

The square root of 720578679 is about 26843.5966107375. The cubic root of 720578679 is about 896.5210049008.

The spelling of 720578679 in words is "seven hundred twenty million, five hundred seventy-eight thousand, six hundred seventy-nine".