722156266 has 12 divisors (see below), whose sum is σ = 1172970342. Its totient is φ = 333302736.

The previous prime is 722156261. The next prime is 722156273. The reversal of 722156266 is 662651227.

It can be written as a sum of positive squares in 3 ways, for example, as 113103225 + 609053041 = 10635^2 + 24679^2 .

It is a super-3 number, since 3×722156266³ (a number of 28 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (722156261) 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, 1067941 + ... + 1068616.

Almost surely, 2^722156266 is an apocalyptic number.

722156266 is a deficient number, since it is larger than the sum of its proper divisors (450814076).

722156266 is a wasteful number, since it uses less digits than its factorization.

722156266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2136585 (or 2136572 counting only the distinct ones).

The product of its digits is 60480, while the sum is 37.

The square root of 722156266 is about 26872.9653369330. The cubic root of 722156266 is about 897.1747891548.

The spelling of 722156266 in words is "seven hundred twenty-two million, one hundred fifty-six thousand, two hundred sixty-six".