720583349 has 2 divisors, whose sum is σ = 720583350. Its totient is φ = 720583348.

The previous prime is 720583247. The next prime is 720583351. The reversal of 720583349 is 943385027.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 719848900 + 734449 = 26830^2 + 857^2 .

It is a cyclic number.

It is not a de Polignac number, because 720583349 - 2⁸ = 720583093 is a prime.

Together with 720583351, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (720583049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 360291674 + 360291675.

It is an arithmetic number, because the mean of its divisors is an integer number (360291675).

Almost surely, 2^720583349 is an apocalyptic number.

It is an amenable number.

720583349 is a deficient number, since it is larger than the sum of its proper divisors (1).

720583349 is an equidigital number, since it uses as much as digits as its factorization.

720583349 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 181440, while the sum is 41.

The square root of 720583349 is about 26843.6835959598. The cubic root of 720583349 is about 896.5229416517.

The spelling of 720583349 in words is "seven hundred twenty million, five hundred eighty-three thousand, three hundred forty-nine".