1266630 has 16 divisors (see below), whose sum is σ = 3039984. Its totient is φ = 337760.

The previous prime is 1266611. The next prime is 1266631. The reversal of 1266630 is 366621.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1266630.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1266631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21081 + ... + 21140.

It is an arithmetic number, because the mean of its divisors is an integer number (189999).

2^1266630 is an apocalyptic number.

1266630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1266630 is an abundant number, since it is smaller than the sum of its proper divisors (1773354).

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

1266630 is a wasteful number, since it uses less digits than its factorization.

1266630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42231.

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 1266630 is about 1125.4465780303. The cubic root of 1266630 is about 108.1973415227.

Subtracting from 1266630 its reverse (366621), we obtain a palindrome (900009).

The spelling of 1266630 in words is "one million, two hundred sixty-six thousand, six hundred thirty".