1222659 has 6 divisors (see below), whose sum is σ = 1766076. Its totient is φ = 815100.

The previous prime is 1222651. The next prime is 1222667. The reversal of 1222659 is 9562221.

1222659 is a `hidden beast` number, since 1 + 2 + 2 + 2 + 659 = 666.

It is an interprime number because it is at equal distance from previous prime (1222651) and next prime (1222667).

It is not a de Polignac number, because 1222659 - 2³ = 1222651 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1222651) 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 5 ways as a sum of consecutive naturals, for example, 67917 + ... + 67934.

It is an arithmetic number, because the mean of its divisors is an integer number (294346).

2^1222659 is an apocalyptic number.

1222659 is a deficient number, since it is larger than the sum of its proper divisors (543417).

1222659 is a wasteful number, since it uses less digits than its factorization.

1222659 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135857 (or 135854 counting only the distinct ones).

The product of its digits is 2160, while the sum is 27.

The square root of 1222659 is about 1105.7391193225. The cubic root of 1222659 is about 106.9305456623.

It can be divided in two parts, 1222 and 659, that added together give a palindrome (1881).

The spelling of 1222659 in words is "one million, two hundred twenty-two thousand, six hundred fifty-nine".