1263006 has 32 divisors (see below), whose sum is σ = 2956800. Its totient is φ = 398520.

The previous prime is 1262957. The next prime is 1263007. The reversal of 1263006 is 6003621.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a plaindrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 1263006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1263007) 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 15 ways as a sum of consecutive naturals, for example, 411 + ... + 1641.

It is an arithmetic number, because the mean of its divisors is an integer number (92400).

2^1263006 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1263006, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1478400).

1263006 is an abundant number, since it is smaller than the sum of its proper divisors (1693794).

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

1263006 is a wasteful number, since it uses less digits than its factorization.

1263006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1261 (or 1255 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 1263006 is about 1123.8353972001. The cubic root of 1263006 is about 108.0940538701.

Adding to 1263006 its reverse (6003621), we get a palindrome (7266627).

The spelling of 1263006 in words is "one million, two hundred sixty-three thousand, six".