726670061 has 8 divisors (see below), whose sum is σ = 782808600. Its totient is φ = 670565952.

The previous prime is 726670037. The next prime is 726670097. The reversal of 726670061 is 160076627.

726670061 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 45981961 + 680688100 = 6781^2 + 26090^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 726670061 - 2¹⁸ = 726407917 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (726670031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50111 + ... + 62963.

It is an arithmetic number, because the mean of its divisors is an integer number (97851075).

Almost surely, 2^726670061 is an apocalyptic number.

It is an amenable number.

726670061 is a deficient number, since it is larger than the sum of its proper divisors (56138539).

726670061 is a wasteful number, since it uses less digits than its factorization.

726670061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17215.

The product of its (nonzero) digits is 21168, while the sum is 35.

The square root of 726670061 is about 26956.8184509968. The cubic root of 726670061 is about 899.0401540588.

The spelling of 726670061 in words is "seven hundred twenty-six million, six hundred seventy thousand, sixty-one".