1263622 has 16 divisors (see below), whose sum is σ = 1987200. Its totient is φ = 601920.

The previous prime is 1263607. The next prime is 1263629. The reversal of 1263622 is 2263621.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1263593 and 1263602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1263629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5404 + ... + 5632.

It is an arithmetic number, because the mean of its divisors is an integer number (124200).

2^1263622 is an apocalyptic number.

1263622 is a deficient number, since it is larger than the sum of its proper divisors (723578).

1263622 is a wasteful number, since it uses less digits than its factorization.

1263622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351.

The product of its digits is 864, while the sum is 22.

The square root of 1263622 is about 1124.1094252785. The cubic root of 1263622 is about 108.1116244160. Note that the first 3 decimals are identical.

Subtracting 1263622 from its reverse (2263621), we obtain a palindrome (999999).

The spelling of 1263622 in words is "one million, two hundred sixty-three thousand, six hundred twenty-two".