11664620 has 48 divisors (see below), whose sum is σ = 27463968. Its totient is φ = 4124160.

The previous prime is 11664619. The next prime is 11664637. The reversal of 11664620 is 2646611.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 11664620.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7424 + ... + 8856.

It is an arithmetic number, because the mean of its divisors is an integer number (572166).

Almost surely, 2^11664620 is an apocalyptic number.

11664620 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 11664620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13731984).

11664620 is an abundant number, since it is smaller than the sum of its proper divisors (15799348).

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

11664620 is a wasteful number, since it uses less digits than its factorization.

11664620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1490 (or 1488 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 11664620 is about 3415.3506408567. The cubic root of 11664620 is about 226.7898071766.

Subtracting from 11664620 its reverse (2646611), we obtain a square (9018009 = 3003²).

The spelling of 11664620 in words is "eleven million, six hundred sixty-four thousand, six hundred twenty".