1266678 has 40 divisors (see below), whose sum is σ = 3246672. Its totient is φ = 361584.

The previous prime is 1266677. The next prime is 1266719. The reversal of 1266678 is 8766621.

It is a happy number.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1266677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 576 + ... + 1692.

2^1266678 is an apocalyptic number.

1266678 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1266678, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1623336).

1266678 is an abundant number, since it is smaller than the sum of its proper divisors (1979994).

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

1266678 is a wasteful number, since it uses less digits than its factorization.

1266678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1138 (or 1129 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 1266678 is about 1125.4679026965. The cubic root of 1266678 is about 108.1987082483.

The spelling of 1266678 in words is "one million, two hundred sixty-six thousand, six hundred seventy-eight".