720700855 has 16 divisors (see below), whose sum is σ = 1011377664. Its totient is φ = 482700960.

The previous prime is 720700853. The next prime is 720700861. The reversal of 720700855 is 558007027.

It is not a de Polignac number, because 720700855 - 2¹ = 720700853 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 720700855.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (720700853) 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 15 ways as a sum of consecutive naturals, for example, 237931 + ... + 240940.

It is an arithmetic number, because the mean of its divisors is an integer number (63211104).

Almost surely, 2^720700855 is an apocalyptic number.

720700855 is a deficient number, since it is larger than the sum of its proper divisors (290676809).

720700855 is a wasteful number, since it uses less digits than its factorization.

720700855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 478926.

The product of its (nonzero) digits is 19600, while the sum is 34.

The square root of 720700855 is about 26845.8722152960. The cubic root of 720700855 is about 896.5716711980.

The spelling of 720700855 in words is "seven hundred twenty million, seven hundred thousand, eight hundred fifty-five".