1226564 has 12 divisors (see below), whose sum is σ = 2259600. Its totient is φ = 580968.

The previous prime is 1226557. The next prime is 1226581. The reversal of 1226564 is 4656221.

It is a d-powerful number, because it can be written as 1 + 2⁷ + 2¹⁷ + 6 + 5³ + 6⁶ + 4¹⁰ .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7994 + ... + 8145.

It is an arithmetic number, because the mean of its divisors is an integer number (188300).

2^1226564 is an apocalyptic number.

It is an amenable number.

1226564 is a deficient number, since it is larger than the sum of its proper divisors (1033036).

1226564 is a wasteful number, since it uses less digits than its factorization.

1226564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16162 (or 16160 counting only the distinct ones).

The product of its digits is 2880, while the sum is 26.

The square root of 1226564 is about 1107.5034988658. The cubic root of 1226564 is about 107.0442650289.

The spelling of 1226564 in words is "one million, two hundred twenty-six thousand, five hundred sixty-four".