720527540 has 12 divisors (see below), whose sum is σ = 1513107876. Its totient is φ = 288211008.

The previous prime is 720527497. The next prime is 720527567. The reversal of 720527540 is 45725027.

It can be written as a sum of positive squares in 2 ways, for example, as 525143056 + 195384484 = 22916^2 + 13978^2 .

It is a junction number, because it is equal to n+sod(n) for n = 720527497 and 720527506.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18013169 + ... + 18013208.

It is an arithmetic number, because the mean of its divisors is an integer number (126092323).

Almost surely, 2^720527540 is an apocalyptic number.

It is an amenable number.

720527540 is an abundant number, since it is smaller than the sum of its proper divisors (792580336).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

720527540 is a wasteful number, since it uses less digits than its factorization.

720527540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36026386 (or 36026384 counting only the distinct ones).

The product of its (nonzero) digits is 19600, while the sum is 32.

The square root of 720527540 is about 26842.6440575440. The cubic root of 720527540 is about 896.4997958950.

The spelling of 720527540 in words is "seven hundred twenty million, five hundred twenty-seven thousand, five hundred forty".