1268660 has 24 divisors (see below), whose sum is σ = 2685480. Its totient is φ = 503424.

The previous prime is 1268633. The next prime is 1268669. The reversal of 1268660 is 668621.

It can be written as a sum of positive squares in 4 ways, for example, as 195364 + 1073296 = 442^2 + 1036^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1268669) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4442 + ... + 4718.

It is an arithmetic number, because the mean of its divisors is an integer number (111895).

2^1268660 is an apocalyptic number.

1268660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1268660 is an abundant number, since it is smaller than the sum of its proper divisors (1416820).

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

1268660 is a wasteful number, since it uses less digits than its factorization.

1268660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 515 (or 513 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 1268660 is about 1126.3480811898. The cubic root of 1268660 is about 108.2551125029.

The spelling of 1268660 in words is "one million, two hundred sixty-eight thousand, six hundred sixty".