720564878 has 8 divisors (see below), whose sum is σ = 1179106200. Its totient is φ = 327529480.

The previous prime is 720564877. The next prime is 720564893. The reversal of 720564878 is 878465027.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (720564877) 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, 16376453 + ... + 16376496.

It is an arithmetic number, because the mean of its divisors is an integer number (147388275).

Almost surely, 2^720564878 is an apocalyptic number.

720564878 is a deficient number, since it is larger than the sum of its proper divisors (458541322).

720564878 is a wasteful number, since it uses less digits than its factorization.

720564878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32752962.

The product of its (nonzero) digits is 752640, while the sum is 47.

The square root of 720564878 is about 26843.3395463381. The cubic root of 720564878 is about 896.5152812763.

The spelling of 720564878 in words is "seven hundred twenty million, five hundred sixty-four thousand, eight hundred seventy-eight".