11661338 has 12 divisors (see below), whose sum is σ = 18941598. Its totient is φ = 5382000.

The previous prime is 11661323. The next prime is 11661347. The reversal of 11661338 is 83316611.

It can be written as a sum of positive squares in 3 ways, for example, as 6265009 + 5396329 = 2503^2 + 2323^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 11661338.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 16913 + ... + 17588.

Almost surely, 2^11661338 is an apocalyptic number.

11661338 is a deficient number, since it is larger than the sum of its proper divisors (7280260).

11661338 is a wasteful number, since it uses less digits than its factorization.

11661338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34529 (or 34516 counting only the distinct ones).

The product of its digits is 2592, while the sum is 29.

The square root of 11661338 is about 3414.8701293021. The cubic root of 11661338 is about 226.7685350458.

Adding to 11661338 its reverse (83316611), we get a palindrome (94977949).

The spelling of 11661338 in words is "eleven million, six hundred sixty-one thousand, three hundred thirty-eight".