1266624 has 56 divisors (see below), whose sum is σ = 3728720. Its totient is φ = 421632.

The previous prime is 1266611. The next prime is 1266631. The reversal of 1266624 is 4266621.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nude number because it is divisible by every one of its digits.

It is a nialpdrome in base 12.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1362 + ... + 2094.

2^1266624 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1266624, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1864360).

1266624 is an abundant number, since it is smaller than the sum of its proper divisors (2462096).

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

1266624 is an equidigital number, since it uses as much as digits as its factorization.

1266624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 754 (or 738 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

The square root of 1266624 is about 1125.4439124186. The cubic root of 1266624 is about 108.1971706796.

The spelling of 1266624 in words is "one million, two hundred sixty-six thousand, six hundred twenty-four".