724138007 has 4 divisors (see below), whose sum is σ = 725866680. Its totient is φ = 722409336.

The previous prime is 724137929. The next prime is 724138031. The reversal of 724138007 is 700831427.

It is a happy number.

724138007 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 700831427 = 11197 ⋅62591.

It is a cyclic number.

It is not a de Polignac number, because 724138007 - 2⁸ = 724137751 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (724138067) 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, 863708 + ... + 864545.

It is an arithmetic number, because the mean of its divisors is an integer number (181466670).

Almost surely, 2^724138007 is an apocalyptic number.

724138007 is a deficient number, since it is larger than the sum of its proper divisors (1728673).

724138007 is a wasteful number, since it uses less digits than its factorization.

724138007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1728672.

The product of its (nonzero) digits is 9408, while the sum is 32.

The square root of 724138007 is about 26909.8124668308. The cubic root of 724138007 is about 897.9947151902.

The spelling of 724138007 in words is "seven hundred twenty-four million, one hundred thirty-eight thousand, seven".