724137969 has 4 divisors (see below), whose sum is σ = 965517296. Its totient is φ = 482758644.

The previous prime is 724137929. The next prime is 724138031. The reversal of 724137969 is 969731427.

It is a happy number.

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 not a de Polignac number, because 724137969 - 2¹² = 724133873 is a prime.

It is a super-2 number, since 2×724137969² = 1048751596294889922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (724137929) 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, 120689659 + ... + 120689664.

It is an arithmetic number, because the mean of its divisors is an integer number (241379324).

Almost surely, 2^724137969 is an apocalyptic number.

It is an amenable number.

724137969 is a deficient number, since it is larger than the sum of its proper divisors (241379327).

724137969 is a wasteful number, since it uses less digits than its factorization.

724137969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241379326.

The product of its digits is 571536, while the sum is 48.

The square root of 724137969 is about 26909.8117607686. The cubic root of 724137969 is about 897.9946994824.

The spelling of 724137969 in words is "seven hundred twenty-four million, one hundred thirty-seven thousand, nine hundred sixty-nine".