726270631 has 2 divisors, whose sum is σ = 726270632. Its totient is φ = 726270630.

The previous prime is 726270619. The next prime is 726270647. The reversal of 726270631 is 136072627.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 726270631 - 2⁹ = 726270119 is a prime.

It is a super-2 number, since 2×726270631² = 1054938058906276322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (726270661) 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, 363135315 + 363135316.

It is an arithmetic number, because the mean of its divisors is an integer number (363135316).

Almost surely, 2^726270631 is an apocalyptic number.

726270631 is a deficient number, since it is larger than the sum of its proper divisors (1).

726270631 is an equidigital number, since it uses as much as digits as its factorization.

726270631 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21168, while the sum is 34.

The square root of 726270631 is about 26949.4087319184. The cubic root of 726270631 is about 898.8753982113.

The spelling of 726270631 in words is "seven hundred twenty-six million, two hundred seventy thousand, six hundred thirty-one".