1105640 has 32 divisors (see below), whose sum is σ = 2518560. Its totient is φ = 436800.

The previous prime is 1105639. The next prime is 1105649. The reversal of 1105640 is 465011.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1105649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5135 + ... + 5345.

It is an arithmetic number, because the mean of its divisors is an integer number (78705).

2^1105640 is an apocalyptic number.

1105640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1105640 is an abundant number, since it is smaller than the sum of its proper divisors (1412920).

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

1105640 is a wasteful number, since it uses less digits than its factorization.

1105640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 353 (or 349 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 1105640 is about 1051.4941749720. The cubic root of 1105640 is about 103.4041369295.

The spelling of 1105640 in words is "one million, one hundred five thousand, six hundred forty".