726236361 has 14 divisors (see below), whose sum is σ = 1088857530. Its totient is φ = 484157088.

The previous prime is 726236353. The next prime is 726236393. The reversal of 726236361 is 163632627.

726236361 is a `hidden beast` number, since 7 + 262 + 36 + 361 = 666.

It can be written as a sum of positive squares in only one way, i.e., 421070400 + 305165961 = 20520^2 + 17469^2 .

It is not a de Polignac number, because 726236361 - 2³ = 726236353 is a prime.

It is not an unprimeable number, because it can be changed into a prime (726232361) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 497376 + ... + 498833.

Almost surely, 2^726236361 is an apocalyptic number.

It is an amenable number.

726236361 is a deficient number, since it is larger than the sum of its proper divisors (362621169).

726236361 is an frugal number, since it uses more digits than its factorization.

726236361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 996227 (or 996212 counting only the distinct ones).

The product of its digits is 54432, while the sum is 36.

The square root of 726236361 is about 26948.7729034181. The cubic root of 726236361 is about 898.8612597974.

Adding to 726236361 its reverse (163632627), we get a palindrome (889868988).

The spelling of 726236361 in words is "seven hundred twenty-six million, two hundred thirty-six thousand, three hundred sixty-one".