726363121 has 6 divisors (see below), whose sum is σ = 798399266. Its totient is φ = 660330000.

The previous prime is 726363119. The next prime is 726363133. The reversal of 726363121 is 121363627.

It can be written as a sum of positive squares in only one way, i.e., 671069025 + 55294096 = 25905^2 + 7436^2 .

It is not a de Polignac number, because 726363121 - 2¹ = 726363119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (726363221) 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, 3001380 + ... + 3001621.

Almost surely, 2^726363121 is an apocalyptic number.

It is an amenable number.

726363121 is a deficient number, since it is larger than the sum of its proper divisors (72036145).

726363121 is a wasteful number, since it uses less digits than its factorization.

726363121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6003023 (or 6003012 counting only the distinct ones).

The product of its digits is 9072, while the sum is 31.

The square root of 726363121 is about 26951.1246704103. The cubic root of 726363121 is about 898.9135536193.

It can be divided in two parts, 72636 and 3121, that added together give a palindrome (75757).

The spelling of 726363121 in words is "seven hundred twenty-six million, three hundred sixty-three thousand, one hundred twenty-one".