720049 has 8 divisors (see below), whose sum is σ = 798048. Its totient is φ = 644160.

The previous prime is 720023. The next prime is 720053. The reversal of 720049 is 940027.

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

It is not a de Polignac number, because 720049 - 2¹⁷ = 588977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (720019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 249 + ... + 1225.

It is an arithmetic number, because the mean of its divisors is an integer number (99756).

2⁷²⁰⁰⁴⁹ is an apocalyptic number.

It is an amenable number.

720049 is a deficient number, since it is larger than the sum of its proper divisors (77999).

720049 is a wasteful number, since it uses less digits than its factorization.

720049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1055.

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 720049 is about 848.5570104595. The cubic root of 720049 is about 89.6301281150.

Subtracting from 720049 its sum of digits (22), we obtain a palindrome (720027).

The spelling of 720049 in words is "seven hundred twenty thousand, forty-nine".