720402329 has 2 divisors, whose sum is σ = 720402330. Its totient is φ = 720402328.

The previous prime is 720402259. The next prime is 720402359. The reversal of 720402329 is 923204027.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 476417929 + 243984400 = 21827^2 + 15620^2 .

It is an emirp because it is prime and its reverse (923204027) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 720402329 - 2¹² = 720398233 is a prime.

It is not a weakly prime, because it can be changed into another prime (720402359) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 360201164 + 360201165.

It is an arithmetic number, because the mean of its divisors is an integer number (360201165).

Almost surely, 2^720402329 is an apocalyptic number.

It is an amenable number.

720402329 is a deficient number, since it is larger than the sum of its proper divisors (1).

720402329 is an equidigital number, since it uses as much as digits as its factorization.

720402329 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 720402329 is about 26840.3116412608. The cubic root of 720402329 is about 896.4478625857.

The spelling of 720402329 in words is "seven hundred twenty million, four hundred two thousand, three hundred twenty-nine".