11660638 has 16 divisors (see below), whose sum is σ = 19396080. Its totient is φ = 5212800.

The previous prime is 11660633. The next prime is 11660641. The reversal of 11660638 is 83606611.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11660633) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3003 + ... + 5686.

It is an arithmetic number, because the mean of its divisors is an integer number (1212255).

Almost surely, 2^11660638 is an apocalyptic number.

11660638 is a deficient number, since it is larger than the sum of its proper divisors (7735442).

11660638 is a wasteful number, since it uses less digits than its factorization.

11660638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8763.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 11660638 is about 3414.7676348472. The cubic root of 11660638 is about 226.7639975119.

The spelling of 11660638 in words is "eleven million, six hundred sixty thousand, six hundred thirty-eight".