11640560 has 40 divisors (see below), whose sum is σ = 27225936. Its totient is φ = 4628480.

The previous prime is 11640547. The next prime is 11640583. The reversal of 11640560 is 6504611.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×11640560² = 271005274227200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17840 + ... + 18480.

Almost surely, 2^11640560 is an apocalyptic number.

11640560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11640560 is an abundant number, since it is smaller than the sum of its proper divisors (15585376).

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

11640560 is a wasteful number, since it uses less digits than its factorization.

11640560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 881 (or 875 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 11640560 is about 3411.8264903128. The cubic root of 11640560 is about 226.6337706970.

The spelling of 11640560 in words is "eleven million, six hundred forty thousand, five hundred sixty".