726206737 has 2 divisors, whose sum is σ = 726206738. Its totient is φ = 726206736.

The previous prime is 726206717. The next prime is 726206743. The reversal of 726206737 is 737602627.

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., 637865536 + 88341201 = 25256^2 + 9399^2 .

It is a cyclic number.

It is not a de Polignac number, because 726206737 - 2⁷ = 726206609 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 726206737.

It is not a weakly prime, because it can be changed into another prime (726206717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 363103368 + 363103369.

It is an arithmetic number, because the mean of its divisors is an integer number (363103369).

Almost surely, 2^726206737 is an apocalyptic number.

It is an amenable number.

726206737 is a deficient number, since it is larger than the sum of its proper divisors (1).

726206737 is an equidigital number, since it uses as much as digits as its factorization.

726206737 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 148176, while the sum is 40.

The square root of 726206737 is about 26948.2232623971. The cubic root of 726206737 is about 898.8490377765.

The spelling of 726206737 in words is "seven hundred twenty-six million, two hundred six thousand, seven hundred thirty-seven".