720099615 has 32 divisors (see below), whose sum is σ = 1172321280. Its totient is φ = 377380224.

The previous prime is 720099613. The next prime is 720099649. The reversal of 720099615 is 516990027.

It is not a de Polignac number, because 720099615 - 2¹ = 720099613 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (720099613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 267657 + ... + 270333.

It is an arithmetic number, because the mean of its divisors is an integer number (36635040).

Almost surely, 2^720099615 is an apocalyptic number.

720099615 is a deficient number, since it is larger than the sum of its proper divisors (452221665).

720099615 is a wasteful number, since it uses less digits than its factorization.

720099615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2991.

The product of its (nonzero) digits is 34020, while the sum is 39.

The square root of 720099615 is about 26834.6718817279. The cubic root of 720099615 is about 896.3222821399.

The spelling of 720099615 in words is "seven hundred twenty million, ninety-nine thousand, six hundred fifteen".