11609680 has 20 divisors (see below), whose sum is σ = 26992692. Its totient is φ = 4643840.

The previous prime is 11609677. The next prime is 11609681. The reversal of 11609680 is 8690611.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2585664 + 9024016 = 1608^2 + 3004^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11609681) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72481 + ... + 72640.

Almost surely, 2^11609680 is an apocalyptic number.

11609680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11609680 is an abundant number, since it is smaller than the sum of its proper divisors (15383012).

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

11609680 is a wasteful number, since it uses less digits than its factorization.

11609680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145134 (or 145128 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 31.

The square root of 11609680 is about 3407.2980497749. The cubic root of 11609680 is about 226.4331890395.

The spelling of 11609680 in words is "eleven million, six hundred nine thousand, six hundred eighty".