11640654 has 48 divisors (see below), whose sum is σ = 26891280. Its totient is φ = 3628800.

The previous prime is 11640649. The next prime is 11640677. The reversal of 11640654 is 45604611.

11640654 is a `hidden beast` number, since 1 + 1 + 6 + 4 + 0 + 654 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 34374 + ... + 34710.

It is an arithmetic number, because the mean of its divisors is an integer number (560235).

Almost surely, 2^11640654 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11640654, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13445640).

11640654 is an abundant number, since it is smaller than the sum of its proper divisors (15250626).

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

11640654 is a wasteful number, since it uses less digits than its factorization.

11640654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 465 (or 462 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 11640654 is about 3411.8402658976. The cubic root of 11640654 is about 226.6343807340.

The spelling of 11640654 in words is "eleven million, six hundred forty thousand, six hundred fifty-four".