720246505 has 8 divisors (see below), whose sum is σ = 942868224. Its totient is φ = 523815600.

The previous prime is 720246503. The next prime is 720246539. The reversal of 720246505 is 505642027.

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

It is not a de Polignac number, because 720246505 - 2¹ = 720246503 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (720246503) 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 7 ways as a sum of consecutive naturals, for example, 6547641 + ... + 6547750.

It is an arithmetic number, because the mean of its divisors is an integer number (117858528).

Almost surely, 2^720246505 is an apocalyptic number.

It is an amenable number.

720246505 is a deficient number, since it is larger than the sum of its proper divisors (222621719).

720246505 is a wasteful number, since it uses less digits than its factorization.

720246505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13095407.

The product of its (nonzero) digits is 16800, while the sum is 31.

The square root of 720246505 is about 26837.4086863840. The cubic root of 720246505 is about 896.3832236291.

The spelling of 720246505 in words is "seven hundred twenty million, two hundred forty-six thousand, five hundred five".