11006638 has 4 divisors (see below), whose sum is σ = 16509960. Its totient is φ = 5503318.

The previous prime is 11006629. The next prime is 11006647. The reversal of 11006638 is 83660011.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 83660011 = 223 ⋅375157.

It is an interprime number because it is at equal distance from previous prime (11006629) and next prime (11006647).

It is a super-2 number, since 2×11006638² = 242292160126088, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2751658 + ... + 2751661.

It is an arithmetic number, because the mean of its divisors is an integer number (4127490).

Almost surely, 2^11006638 is an apocalyptic number.

11006638 is a deficient number, since it is larger than the sum of its proper divisors (5503322).

11006638 is an equidigital number, since it uses as much as digits as its factorization.

11006638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5503321.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 11006638 is about 3317.6253555819. The cubic root of 11006638 is about 222.4427357578.

Adding to 11006638 its reverse (83660011), we get a palindrome (94666649).

The spelling of 11006638 in words is "eleven million, six thousand, six hundred thirty-eight".