720269249 has 4 divisors (see below), whose sum is σ = 823164864. Its totient is φ = 617373636.

The previous prime is 720269237. The next prime is 720269287. The reversal of 720269249 is 942962027.

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 720269249 - 2²⁴ = 703492033 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (720229249) 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, 51447797 + ... + 51447810.

It is an arithmetic number, because the mean of its divisors is an integer number (205791216).

Almost surely, 2^720269249 is an apocalyptic number.

It is an amenable number.

720269249 is a deficient number, since it is larger than the sum of its proper divisors (102895615).

720269249 is a wasteful number, since it uses less digits than its factorization.

720269249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102895614.

The product of its (nonzero) digits is 108864, while the sum is 41.

The square root of 720269249 is about 26837.8324199254. The cubic root of 720269249 is about 896.3926588828.

The spelling of 720269249 in words is "seven hundred twenty million, two hundred sixty-nine thousand, two hundred forty-nine".