1222615 has 8 divisors (see below), whose sum is σ = 1473120. Its totient is φ = 974112.

The previous prime is 1222603. The next prime is 1222633. The reversal of 1222615 is 5162221.

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

It is a cyclic number.

It is not a de Polignac number, because 1222615 - 2⁵ = 1222583 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1222592 and 1222601.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1917 + ... + 2473.

It is an arithmetic number, because the mean of its divisors is an integer number (184140).

2^1222615 is an apocalyptic number.

1222615 is a deficient number, since it is larger than the sum of its proper divisors (250505).

1222615 is an equidigital number, since it uses as much as digits as its factorization.

1222615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1001.

The product of its digits is 240, while the sum is 19.

The square root of 1222615 is about 1105.7192229495. The cubic root of 1222615 is about 106.9292629387.

Adding to 1222615 its reverse (5162221), we get a palindrome (6384836).

The spelling of 1222615 in words is "one million, two hundred twenty-two thousand, six hundred fifteen".