726918705 has 28 divisors (see below), whose sum is σ = 1307861940. Its totient is φ = 387688032.

The previous prime is 726918697. The next prime is 726918707. The reversal of 726918705 is 507819627.

It can be written as a sum of positive squares in 2 ways, for example, as 301404321 + 425514384 = 17361^2 + 20628^2 .

It is not a de Polignac number, because 726918705 - 2³ = 726918697 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (726918707) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 96070 + ... + 103359.

It is an arithmetic number, because the mean of its divisors is an integer number (46709355).

Almost surely, 2^726918705 is an apocalyptic number.

It is an amenable number.

726918705 is a deficient number, since it is larger than the sum of its proper divisors (580943235).

726918705 is an equidigital number, since it uses as much as digits as its factorization.

726918705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199452 (or 199437 counting only the distinct ones).

The product of its (nonzero) digits is 211680, while the sum is 45.

The square root of 726918705 is about 26961.4299509503. The cubic root of 726918705 is about 899.1426836022.

The spelling of 726918705 in words is "seven hundred twenty-six million, nine hundred eighteen thousand, seven hundred five".