11091607 has 4 divisors (see below), whose sum is σ = 11362176. Its totient is φ = 10821040.

The previous prime is 11091593. The next prime is 11091617. The reversal of 11091607 is 70619011.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11091607 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11091617) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 135223 + ... + 135304.

It is an arithmetic number, because the mean of its divisors is an integer number (2840544).

Almost surely, 2^11091607 is an apocalyptic number.

11091607 is a deficient number, since it is larger than the sum of its proper divisors (270569).

11091607 is an equidigital number, since it uses as much as digits as its factorization.

11091607 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270568.

The product of its (nonzero) digits is 378, while the sum is 25.

The square root of 11091607 is about 3330.4064316537. The cubic root of 11091607 is about 223.0136732753.

The spelling of 11091607 in words is "eleven million, ninety-one thousand, six hundred seven".