611266 has 4 divisors (see below), whose sum is σ = 916902. Its totient is φ = 305632.

The previous prime is 611263. The next prime is 611279. The reversal of 611266 is 662116.

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

It can be written as a sum of positive squares in only one way, i.e., 385641 + 225625 = 621^2 + 475^2 .

It is a super-2 number, since 2×611266² = 747292245512, which contains 22 as substring.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a plaindrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (611263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 152815 + ... + 152818.

2⁶¹¹²⁶⁶ is an apocalyptic number.

611266 is a deficient number, since it is larger than the sum of its proper divisors (305636).

611266 is a wasteful number, since it uses less digits than its factorization.

611266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305635.

The product of its digits is 432, while the sum is 22.

The square root of 611266 is about 781.8350209603. The cubic root of 611266 is about 84.8678916673.

The spelling of 611266 in words is "six hundred eleven thousand, two hundred sixty-six".