1191606 has 16 divisors (see below), whose sum is σ = 2566704. Its totient is φ = 366624.

The previous prime is 1191601. The next prime is 1191611. The reversal of 1191606 is 6061911.

It is an interprime number because it is at equal distance from previous prime (1191601) and next prime (1191611).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1191601) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 7561 + ... + 7716.

It is an arithmetic number, because the mean of its divisors is an integer number (160419).

2^1191606 is an apocalyptic number.

1191606 is an abundant number, since it is smaller than the sum of its proper divisors (1375098).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1191606 is a wasteful number, since it uses less digits than its factorization.

1191606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15295.

The product of its (nonzero) digits is 324, while the sum is 24.

The square root of 1191606 is about 1091.6070721647. The cubic root of 1191606 is about 106.0175003739.

The spelling of 1191606 in words is "one million, one hundred ninety-one thousand, six hundred six".