726601951 has 2 divisors, whose sum is σ = 726601952. Its totient is φ = 726601950.

The previous prime is 726601949. The next prime is 726601969. The reversal of 726601951 is 159106627.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 726601951 - 2¹ = 726601949 is a prime.

Together with 726601949, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 726601951.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (726671951) 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, 363300975 + 363300976.

It is an arithmetic number, because the mean of its divisors is an integer number (363300976).

Almost surely, 2^726601951 is an apocalyptic number.

726601951 is a deficient number, since it is larger than the sum of its proper divisors (1).

726601951 is an equidigital number, since it uses as much as digits as its factorization.

726601951 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22680, while the sum is 37.

The square root of 726601951 is about 26955.5551046533. Note that the first 3 decimals coincide. The cubic root of 726601951 is about 899.0120644936.

The spelling of 726601951 in words is "seven hundred twenty-six million, six hundred one thousand, nine hundred fifty-one".