1266266 has 4 divisors (see below), whose sum is σ = 1899402. Its totient is φ = 633132.

The previous prime is 1266263. The next prime is 1266269. The reversal of 1266266 is 6626621.

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 (1266263) and next prime (1266269).

It can be written as a sum of positive squares in only one way, i.e., 863041 + 403225 = 929^2 + 635^2 .

It is not an unprimeable number, because it can be changed into a prime (1266263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 316565 + ... + 316568.

2^1266266 is an apocalyptic number.

1266266 is a deficient number, since it is larger than the sum of its proper divisors (633136).

1266266 is an equidigital number, since it uses as much as digits as its factorization.

1266266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 633135.

The product of its digits is 5184, while the sum is 29.

The square root of 1266266 is about 1125.2848528262. The cubic root of 1266266 is about 108.1869760633.

The spelling of 1266266 in words is "one million, two hundred sixty-six thousand, two hundred sixty-six".