726535 has 4 divisors (see below), whose sum is σ = 871848. Its totient is φ = 581224.

The previous prime is 726533. The next prime is 726559. The reversal of 726535 is 535627.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 726535 - 2¹ = 726533 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 (726533) 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, 72649 + ... + 72658.

It is an arithmetic number, because the mean of its divisors is an integer number (217962).

2⁷²⁶⁵³⁵ is an apocalyptic number.

726535 is a deficient number, since it is larger than the sum of its proper divisors (145313).

726535 is a wasteful number, since it uses less digits than its factorization.

726535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145312.

The product of its digits is 6300, while the sum is 28.

The square root of 726535 is about 852.3702247263. The cubic root of 726535 is about 89.8984451206.

It can be divided in two parts, 7 and 26535, that multiplied together give a triangular number (185745 = T₆₀₉).

The spelling of 726535 in words is "seven hundred twenty-six thousand, five hundred thirty-five".