726727226 has 4 divisors (see below), whose sum is σ = 1090090842. Its totient is φ = 363363612.

The previous prime is 726727223. The next prime is 726727229. The reversal of 726727226 is 622727627.

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

It is an interprime number because it is at equal distance from previous prime (726727223) and next prime (726727229).

It can be written as a sum of positive squares in only one way, i.e., 533656201 + 193071025 = 23101^2 + 13895^2 .

It is a super-2 number, since 2×726727226² = 1056264922019310152, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (726727223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 181681805 + ... + 181681808.

Almost surely, 2^726727226 is an apocalyptic number.

726727226 is a deficient number, since it is larger than the sum of its proper divisors (363363616).

726727226 is a wasteful number, since it uses less digits than its factorization.

726727226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 363363615.

The product of its digits is 197568, while the sum is 41.

The square root of 726727226 is about 26957.8787370223. The cubic root of 726727226 is about 899.0637283903.

The spelling of 726727226 in words is "seven hundred twenty-six million, seven hundred twenty-seven thousand, two hundred twenty-six".