1222623 has 24 divisors (see below), whose sum is σ = 1915056. Its totient is φ = 748800.

The previous prime is 1222603. The next prime is 1222633. The reversal of 1222623 is 3262221.

It is not a de Polignac number, because 1222623 - 2¹³ = 1214431 is a prime.

1222623 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 1222596 and 1222605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222603) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9268 + ... + 9398.

It is an arithmetic number, because the mean of its divisors is an integer number (79794).

2^1222623 is an apocalyptic number.

1222623 is a deficient number, since it is larger than the sum of its proper divisors (692433).

1222623 is a wasteful number, since it uses less digits than its factorization.

1222623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215 (or 212 counting only the distinct ones).

The product of its digits is 288, while the sum is 18.

The square root of 1222623 is about 1105.7228404985. The cubic root of 1222623 is about 106.9294961635.

Adding to 1222623 its reverse (3262221), we get a palindrome (4484844).

It can be divided in two parts, 122262 and 3, that added together give a triangular number (122265 = T₄₉₄).

The spelling of 1222623 in words is "one million, two hundred twenty-two thousand, six hundred twenty-three".