720599438 has 12 divisors (see below), whose sum is σ = 1170441648. Its totient is φ = 332584200.

The previous prime is 720599437. The next prime is 720599449. The reversal of 720599438 is 834995027.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 720599392 and 720599401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (720599437) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1065638 + ... + 1066313.

It is an arithmetic number, because the mean of its divisors is an integer number (97536804).

Almost surely, 2^720599438 is an apocalyptic number.

720599438 is a deficient number, since it is larger than the sum of its proper divisors (449842210).

720599438 is a wasteful number, since it uses less digits than its factorization.

720599438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2131979 (or 2131966 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 47.

The square root of 720599438 is about 26843.9832737245. The cubic root of 720599438 is about 896.5296140467.

The spelling of 720599438 in words is "seven hundred twenty million, five hundred ninety-nine thousand, four hundred thirty-eight".