1228566 has 16 divisors (see below), whose sum is σ = 2487744. Its totient is φ = 404424.

The previous prime is 1228547. The next prime is 1228567. The reversal of 1228566 is 6658221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1228567) 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, 736 + ... + 1731.

It is an arithmetic number, because the mean of its divisors is an integer number (155484).

2^1228566 is an apocalyptic number.

1228566 is an abundant number, since it is smaller than the sum of its proper divisors (1259178).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1228566 is a wasteful number, since it uses less digits than its factorization.

1228566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2555.

The product of its digits is 5760, while the sum is 30.

The square root of 1228566 is about 1108.4069649727. The cubic root of 1228566 is about 107.1024726531.

The spelling of 1228566 in words is "one million, two hundred twenty-eight thousand, five hundred sixty-six".