1266620 has 12 divisors (see below), whose sum is σ = 2659944. Its totient is φ = 506640.

The previous prime is 1266611. The next prime is 1266631. The reversal of 1266620 is 266621.

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31646 + ... + 31685.

It is an arithmetic number, because the mean of its divisors is an integer number (221662).

2^1266620 is an apocalyptic number.

1266620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1266620 is an abundant number, since it is smaller than the sum of its proper divisors (1393324).

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

1266620 is a wasteful number, since it uses less digits than its factorization.

1266620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63340 (or 63338 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 1266620 is about 1125.4421353406. The cubic root of 1266620 is about 108.1970567839.

Subtracting from 1266620 its reverse (266621), we obtain a palindrome (999999).

The spelling of 1266620 in words is "one million, two hundred sixty-six thousand, six hundred twenty".