1222663 has 8 divisors (see below), whose sum is σ = 1327088. Its totient is φ = 1119744.

The previous prime is 1222651. The next prime is 1222667. The reversal of 1222663 is 3662221.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a 9-Lehmer number, since φ(1222663) divides (1222663-1)⁹.

It is a cyclic number.

It is not a de Polignac number, because 1222663 - 2¹³ = 1214471 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222667) 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, 1831 + ... + 2407.

It is an arithmetic number, because the mean of its divisors is an integer number (165886).

2^1222663 is an apocalyptic number.

1222663 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1222663 is a deficient number, since it is larger than the sum of its proper divisors (104425).

1222663 is a wasteful number, since it uses less digits than its factorization.

1222663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 753.

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

The square root of 1222663 is about 1105.7409280659. The cubic root of 1222663 is about 106.9306622720.

Adding to 1222663 its reverse (3662221), we get a palindrome (4884884).

The spelling of 1222663 in words is "one million, two hundred twenty-two thousand, six hundred sixty-three".