726010981 has 2 divisors, whose sum is σ = 726010982. Its totient is φ = 726010980.

The previous prime is 726010973. The next prime is 726011023. The reversal of 726010981 is 189010627.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 723341025 + 2669956 = 26895^2 + 1634^2 .

It is a cyclic number.

It is not a de Polignac number, because 726010981 - 2³ = 726010973 is a prime.

It is a super-2 number, since 2×726010981² = 1054183889065164722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (726016981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 363005490 + 363005491.

It is an arithmetic number, because the mean of its divisors is an integer number (363005491).

Almost surely, 2^726010981 is an apocalyptic number.

It is an amenable number.

726010981 is a deficient number, since it is larger than the sum of its proper divisors (1).

726010981 is an equidigital number, since it uses as much as digits as its factorization.

726010981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 34.

The square root of 726010981 is about 26944.5909414116. The cubic root of 726010981 is about 898.7682660550.

The spelling of 726010981 in words is "seven hundred twenty-six million, ten thousand, nine hundred eighty-one".