726106897 has 4 divisors (see below), whose sum is σ = 726329380. Its totient is φ = 725884416.

The previous prime is 726106889. The next prime is 726106903. The reversal of 726106897 is 798601627.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 798601627 = 397 ⋅2011591.

It can be written as a sum of positive squares in 2 ways, for example, as 651474576 + 74632321 = 25524^2 + 8639^2 .

It is a cyclic number.

It is not a de Polignac number, because 726106897 - 2³ = 726106889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (726106817) 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 in 3 ways as a sum of consecutive naturals, for example, 106272 + ... + 112897.

It is an arithmetic number, because the mean of its divisors is an integer number (181582345).

Almost surely, 2^726106897 is an apocalyptic number.

It is an amenable number.

726106897 is a deficient number, since it is larger than the sum of its proper divisors (222483).

726106897 is a wasteful number, since it uses less digits than its factorization.

726106897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222482.

The product of its (nonzero) digits is 254016, while the sum is 46.

The square root of 726106897 is about 26946.3707574879. The cubic root of 726106897 is about 898.8078441804.

It can be divided in two parts, 72610 and 6897, that added together give a cube (79507 = 43³).

The spelling of 726106897 in words is "seven hundred twenty-six million, one hundred six thousand, eight hundred ninety-seven".