726220619 has 2 divisors, whose sum is σ = 726220620. Its totient is φ = 726220618.

The previous prime is 726220609. The next prime is 726220631. The reversal of 726220619 is 916022627.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 726220619 - 2¹⁶ = 726155083 is a prime.

It is a super-2 number, since 2×726220619² = 1054792774921486322, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (726220609) 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, 363110309 + 363110310.

It is an arithmetic number, because the mean of its divisors is an integer number (363110310).

Almost surely, 2^726220619 is an apocalyptic number.

726220619 is a deficient number, since it is larger than the sum of its proper divisors (1).

726220619 is an equidigital number, since it uses as much as digits as its factorization.

726220619 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 726220619 is about 26948.4808291673. The cubic root of 726220619 is about 898.8547651367.

The spelling of 726220619 in words is "seven hundred twenty-six million, two hundred twenty thousand, six hundred nineteen".