720599401 has 2 divisors, whose sum is σ = 720599402. Its totient is φ = 720599400.

The previous prime is 720599387. The next prime is 720599419. The reversal of 720599401 is 104995027.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 404613225 + 315986176 = 20115^2 + 17776^2 .

It is an emirp because it is prime and its reverse (104995027) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 720599401 - 2²⁷ = 586381673 is a prime.

It is not a weakly prime, because it can be changed into another prime (720599701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 360299700 + 360299701.

It is an arithmetic number, because the mean of its divisors is an integer number (360299701).

Almost surely, 2^720599401 is an apocalyptic number.

It is an amenable number.

720599401 is a deficient number, since it is larger than the sum of its proper divisors (1).

720599401 is an equidigital number, since it uses as much as digits as its factorization.

720599401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 22680, while the sum is 37.

The square root of 720599401 is about 26843.9825845570. The cubic root of 720599401 is about 896.5295987023.

The spelling of 720599401 in words is "seven hundred twenty million, five hundred ninety-nine thousand, four hundred one".