11662638 has 16 divisors (see below), whose sum is σ = 25119696.
Its totient is φ = 3588480.
The previous prime is 11662631. The next prime is 11662639. The reversal of 11662638 is 83626611.
It is a junction number, because it is equal to n+sod(n) for n = 11662599 and 11662608.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (11662631) 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, 74683 + ... + 74838.
It is an arithmetic number, because the mean of its divisors is an integer number (1569981).
Almost surely, 211662638 is an apocalyptic number.
11662638 is an abundant number, since it is smaller than the sum of its proper divisors (13457058).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
11662638 is a wasteful number, since it uses less digits than its factorization.
11662638 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 149539.
The product of its digits is 10368, while the sum is 33.
The square root of 11662638 is about 3415.0604679859.
The cubic root of 11662638 is about 226.7769614128.
The spelling of 11662638 in words is "eleven million, six hundred sixty-two thousand, six hundred thirty-eight".