720003449 has 4 divisors (see below), whose sum is σ = 785458320. Its totient is φ = 654548580.

The previous prime is 720003443. The next prime is 720003457. The reversal of 720003449 is 944300027.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 720003449 - 2⁴ = 720003433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (720003443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32727419 + ... + 32727440.

It is an arithmetic number, because the mean of its divisors is an integer number (196364580).

Almost surely, 2^720003449 is an apocalyptic number.

It is an amenable number.

720003449 is a deficient number, since it is larger than the sum of its proper divisors (65454871).

720003449 is a wasteful number, since it uses less digits than its factorization.

720003449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65454870.

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 720003449 is about 26832.8799982410. The cubic root of 720003449 is about 896.2823804541.

The spelling of 720003449 in words is "seven hundred twenty million, three thousand, four hundred forty-nine".