720535507 has 2 divisors, whose sum is σ = 720535508. Its totient is φ = 720535506.

The previous prime is 720535451. The next prime is 720535549. The reversal of 720535507 is 705535027.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 720535507 - 2¹¹ = 720533459 is a prime.

It is not a weakly prime, because it can be changed into another prime (720535567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 360267753 + 360267754.

It is an arithmetic number, because the mean of its divisors is an integer number (360267754).

Almost surely, 2^720535507 is an apocalyptic number.

720535507 is a deficient number, since it is larger than the sum of its proper divisors (1).

720535507 is an equidigital number, since it uses as much as digits as its factorization.

720535507 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36750, while the sum is 34.

The square root of 720535507 is about 26842.7924590569. The cubic root of 720535507 is about 896.5031001349.

The spelling of 720535507 in words is "seven hundred twenty million, five hundred thirty-five thousand, five hundred seven".