726407523 has 6 divisors (see below), whose sum is σ = 1049255324. Its totient is φ = 484271676.

The previous prime is 726407519. The next prime is 726407527. The reversal of 726407523 is 325704627.

It is a happy number.

726407523 is a `hidden beast` number, since 7 + 2 + 640 + 7 + 5 + 2 + 3 = 666.

It is an interprime number because it is at equal distance from previous prime (726407519) and next prime (726407527).

It is not a de Polignac number, because 726407523 - 2² = 726407519 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (726407527) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 40355965 + ... + 40355982.

Almost surely, 2^726407523 is an apocalyptic number.

726407523 is a deficient number, since it is larger than the sum of its proper divisors (322847801).

726407523 is a wasteful number, since it uses less digits than its factorization.

726407523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80711953 (or 80711950 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 36.

The square root of 726407523 is about 26951.9484082320. The cubic root of 726407523 is about 898.9318698697.

The spelling of 726407523 in words is "seven hundred twenty-six million, four hundred seven thousand, five hundred twenty-three".