726535493 has 4 divisors (see below), whose sum is σ = 736488108. Its totient is φ = 716582880.

The previous prime is 726535487. The next prime is 726535507. The reversal of 726535493 is 394535627.

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

It can be written as a sum of positive squares in 2 ways, for example, as 598438369 + 128097124 = 24463^2 + 11318^2 .

It is a cyclic number.

It is not a de Polignac number, because 726535493 - 2¹⁴ = 726519109 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (726535483) 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, 4976198 + ... + 4976343.

It is an arithmetic number, because the mean of its divisors is an integer number (184122027).

Almost surely, 2^726535493 is an apocalyptic number.

726535493 is a gapful number since it is divisible by the number (73) formed by its first and last digit.

It is an amenable number.

726535493 is a deficient number, since it is larger than the sum of its proper divisors (9952615).

726535493 is an equidigital number, since it uses as much as digits as its factorization.

726535493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9952614.

The product of its digits is 680400, while the sum is 44.

The square root of 726535493 is about 26954.3223435500. The cubic root of 726535493 is about 898.9846545455.

The spelling of 726535493 in words is "seven hundred twenty-six million, five hundred thirty-five thousand, four hundred ninety-three".