11061640 has 32 divisors (see below), whose sum is σ = 25090560. Its totient is φ = 4388800.

The previous prime is 11061623. The next prime is 11061641. The reversal of 11061640 is 4616011.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (11061641) 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, 4185 + ... + 6295.

It is an arithmetic number, because the mean of its divisors is an integer number (784080).

Almost surely, 2^11061640 is an apocalyptic number.

11061640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11061640 is an abundant number, since it is smaller than the sum of its proper divisors (14028920).

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

11061640 is a wasteful number, since it uses less digits than its factorization.

11061640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2253 (or 2249 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 11061640 is about 3325.9043882830. The cubic root of 11061640 is about 222.8126480469.

Adding to 11061640 its reverse (4616011), we get a palindrome (15677651).

The spelling of 11061640 in words is "eleven million, sixty-one thousand, six hundred forty".