720491383 has 2 divisors, whose sum is σ = 720491384. Its totient is φ = 720491382.

The previous prime is 720491363. The next prime is 720491411. The reversal of 720491383 is 383194027.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 720491383 - 2⁵ = 720491351 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (720491323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 360245691 + 360245692.

It is an arithmetic number, because the mean of its divisors is an integer number (360245692).

Almost surely, 2^720491383 is an apocalyptic number.

720491383 is a deficient number, since it is larger than the sum of its proper divisors (1).

720491383 is an equidigital number, since it uses as much as digits as its factorization.

720491383 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 720491383 is about 26841.9705498684. The cubic root of 720491383 is about 896.4847998060.

The spelling of 720491383 in words is "seven hundred twenty million, four hundred ninety-one thousand, three hundred eighty-three".