720533701 has 2 divisors, whose sum is σ = 720533702. Its totient is φ = 720533700.

The previous prime is 720533699. The next prime is 720533711. The reversal of 720533701 is 107335027.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 412496100 + 308037601 = 20310^2 + 17551^2 .

It is an emirp because it is prime and its reverse (107335027) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 720533701 - 2¹ = 720533699 is a prime.

Together with 720533699, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 720533701.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (720533711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 360266850 + 360266851.

It is an arithmetic number, because the mean of its divisors is an integer number (360266851).

Almost surely, 2^720533701 is an apocalyptic number.

It is an amenable number.

720533701 is a deficient number, since it is larger than the sum of its proper divisors (1).

720533701 is an equidigital number, since it uses as much as digits as its factorization.

720533701 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4410, while the sum is 28.

The square root of 720533701 is about 26842.7588187206. The cubic root of 720533701 is about 896.5023511151.

Adding to 720533701 its reverse (107335027), we get a palindrome (827868728).

The spelling of 720533701 in words is "seven hundred twenty million, five hundred thirty-three thousand, seven hundred one".