1123655 has 16 divisors (see below), whose sum is σ = 1481760. Its totient is φ = 812928.

The previous prime is 1123651. The next prime is 1123667. The reversal of 1123655 is 5563211.

It is a cyclic number.

It is not a de Polignac number, because 1123655 - 2² = 1123651 is a prime.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 1123655.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123651) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3689 + ... + 3981.

It is an arithmetic number, because the mean of its divisors is an integer number (92610).

2^1123655 is an apocalyptic number.

1123655 is a deficient number, since it is larger than the sum of its proper divisors (358105).

1123655 is a wasteful number, since it uses less digits than its factorization.

1123655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 370.

The product of its digits is 900, while the sum is 23.

The square root of 1123655 is about 1060.0259430788. The cubic root of 1123655 is about 103.9627270278.

Adding to 1123655 its reverse (5563211), we get a palindrome (6686866).

The spelling of 1123655 in words is "one million, one hundred twenty-three thousand, six hundred fifty-five".