11913660 has 108 divisors (see below), whose sum is σ = 39794664. Its totient is φ = 2882880.

The previous prime is 11913659. The next prime is 11913661. The reversal of 11913660 is 6631911.

It is an interprime number because it is at equal distance from previous prime (11913659) and next prime (11913661).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11913661) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 21507 + ... + 22053.

Almost surely, 2^11913660 is an apocalyptic number.

11913660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11913660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19897332).

11913660 is an abundant number, since it is smaller than the sum of its proper divisors (27881004).

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

11913660 is a wasteful number, since it uses less digits than its factorization.

11913660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 584 (or 568 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 27.

The square root of 11913660 is about 3451.6170123581. The cubic root of 11913660 is about 228.3924450765.

It can be divided in two parts, 1191 and 3660, that added together give a triangular number (4851 = T₉₈).

The spelling of 11913660 in words is "eleven million, nine hundred thirteen thousand, six hundred sixty".