724273649 has 8 divisors (see below), whose sum is σ = 797788992. Its totient is φ = 652037040.

The previous prime is 724273633. The next prime is 724273663. The reversal of 724273649 is 946372427.

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

It is a cyclic number.

It is not a de Polignac number, because 724273649 - 2⁴ = 724273633 is a prime.

It is not an unprimeable number, because it can be changed into a prime (724278649) 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, 318494 + ... + 320759.

It is an arithmetic number, because the mean of its divisors is an integer number (99723624).

Almost surely, 2^724273649 is an apocalyptic number.

It is an amenable number.

724273649 is a deficient number, since it is larger than the sum of its proper divisors (73515343).

724273649 is a wasteful number, since it uses less digits than its factorization.

724273649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 639367.

The product of its digits is 508032, while the sum is 44.

The square root of 724273649 is about 26912.3326562377. The cubic root of 724273649 is about 898.0507810199.

The spelling of 724273649 in words is "seven hundred twenty-four million, two hundred seventy-three thousand, six hundred forty-nine".