726216287 has 4 divisors (see below), whose sum is σ = 726336816. Its totient is φ = 726095760.

The previous prime is 726216263. The next prime is 726216299. The reversal of 726216287 is 782612627.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 782612627 = 19483 ⋅40169.

It is a cyclic number.

It is not a de Polignac number, because 726216287 - 2¹⁰ = 726215263 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 (726216487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50723 + ... + 63444.

It is an arithmetic number, because the mean of its divisors is an integer number (181584204).

Almost surely, 2^726216287 is an apocalyptic number.

726216287 is a deficient number, since it is larger than the sum of its proper divisors (120529).

726216287 is a wasteful number, since it uses less digits than its factorization.

726216287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120528.

The product of its digits is 112896, while the sum is 41.

The square root of 726216287 is about 26948.4004534592. The cubic root of 726216287 is about 898.8529778715.

The spelling of 726216287 in words is "seven hundred twenty-six million, two hundred sixteen thousand, two hundred eighty-seven".