720135355 has 4 divisors (see below), whose sum is σ = 864162432. Its totient is φ = 576108280.

The previous prime is 720135289. The next prime is 720135373. The reversal of 720135355 is 553531027.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 553531027 = 7 ⋅79075861.

It is not a de Polignac number, because 720135355 - 2⁹ = 720134843 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian 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 3 ways as a sum of consecutive naturals, for example, 72013531 + ... + 72013540.

It is an arithmetic number, because the mean of its divisors is an integer number (216040608).

Almost surely, 2^720135355 is an apocalyptic number.

720135355 is a deficient number, since it is larger than the sum of its proper divisors (144027077).

720135355 is a wasteful number, since it uses less digits than its factorization.

720135355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144027076.

The product of its (nonzero) digits is 15750, while the sum is 31.

The square root of 720135355 is about 26835.3378029791. The cubic root of 720135355 is about 896.3371106570.

The spelling of 720135355 in words is "seven hundred twenty million, one hundred thirty-five thousand, three hundred fifty-five".