726734017 has 4 divisors (see below), whose sum is σ = 726792660. Its totient is φ = 726675376.

The previous prime is 726734011. The next prime is 726734051. The reversal of 726734017 is 710437627.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 710437627 = 41 ⋅17327747.

It can be written as a sum of positive squares in 2 ways, for example, as 718025616 + 8708401 = 26796^2 + 2951^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-726734017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (726734011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2638 + ... + 38215.

It is an arithmetic number, because the mean of its divisors is an integer number (181698165).

Almost surely, 2^726734017 is an apocalyptic number.

It is an amenable number.

726734017 is a deficient number, since it is larger than the sum of its proper divisors (58643).

726734017 is a wasteful number, since it uses less digits than its factorization.

726734017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58642.

The product of its (nonzero) digits is 49392, while the sum is 37.

The square root of 726734017 is about 26958.0046924842. The cubic root of 726734017 is about 899.0665288555.

The spelling of 726734017 in words is "seven hundred twenty-six million, seven hundred thirty-four thousand, seventeen".