726536519 has 2 divisors, whose sum is σ = 726536520. Its totient is φ = 726536518.

The previous prime is 726536513. The next prime is 726536521. The reversal of 726536519 is 915635627.

It is a strong prime.

It is an emirp because it is prime and its reverse (915635627) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-726536519 is a prime.

It is a super-2 number, since 2×726536519² = 1055710626881274722, which contains 22 as substring.

Together with 726536521, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 726536519.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (726536513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 363268259 + 363268260.

It is an arithmetic number, because the mean of its divisors is an integer number (363268260).

Almost surely, 2^726536519 is an apocalyptic number.

726536519 is a deficient number, since it is larger than the sum of its proper divisors (1).

726536519 is an equidigital number, since it uses as much as digits as its factorization.

726536519 is an evil number, because the sum of its binary digits is even.

The product of its digits is 340200, while the sum is 44.

The square root of 726536519 is about 26954.3413757413. The cubic root of 726536519 is about 898.9850777218.

The spelling of 726536519 in words is "seven hundred twenty-six million, five hundred thirty-six thousand, five hundred nineteen".