1266340 has 12 divisors (see below), whose sum is σ = 2659356. Its totient is φ = 506528.

The previous prime is 1266337. The next prime is 1266341. The reversal of 1266340 is 436621.

It can be written as a sum of positive squares in 2 ways, for example, as 238144 + 1028196 = 488^2 + 1014^2 .

It is not an unprimeable number, because it can be changed into a prime (1266341) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31639 + ... + 31678.

It is an arithmetic number, because the mean of its divisors is an integer number (221613).

2^1266340 is an apocalyptic number.

1266340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1266340 is an abundant number, since it is smaller than the sum of its proper divisors (1393016).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1266340 is a wasteful number, since it uses less digits than its factorization.

1266340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63326 (or 63324 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 1266340 is about 1125.3177329092. The cubic root of 1266340 is about 108.1890834879.

The spelling of 1266340 in words is "one million, two hundred sixty-six thousand, three hundred forty".