720555055 has 16 divisors (see below), whose sum is σ = 947203488. Its totient is φ = 521856000.

The previous prime is 720555019. The next prime is 720555061. The reversal of 720555055 is 550555027.

It is not a de Polignac number, because 720555055 - 2⁷ = 720554927 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 720555055.

It is a congruent number.

It is an unprimeable number.

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, 13926 + ... + 40435.

It is an arithmetic number, because the mean of its divisors is an integer number (59200218).

Almost surely, 2^720555055 is an apocalyptic number.

720555055 is a deficient number, since it is larger than the sum of its proper divisors (226648433).

720555055 is a wasteful number, since it uses less digits than its factorization.

720555055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54618.

The product of its (nonzero) digits is 43750, while the sum is 34.

The square root of 720555055 is about 26843.1565766770. The cubic root of 720555055 is about 896.5112073847.

The spelling of 720555055 in words is "seven hundred twenty million, five hundred fifty-five thousand, fifty-five".