11478691 has 6 divisors (see below), whose sum is σ = 13352820. Its totient is φ = 9838836.

The previous prime is 11478683. The next prime is 11478697. The reversal of 11478691 is 19687411.

It is not a de Polignac number, because 11478691 - 2³ = 11478683 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11478691.

It is not an unprimeable number, because it can be changed into a prime (11478697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 117081 + ... + 117178.

It is an arithmetic number, because the mean of its divisors is an integer number (2225470).

Almost surely, 2^11478691 is an apocalyptic number.

11478691 is a deficient number, since it is larger than the sum of its proper divisors (1874129).

11478691 is an equidigital number, since it uses as much as digits as its factorization.

11478691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234273 (or 234266 counting only the distinct ones).

The product of its digits is 12096, while the sum is 37.

The square root of 11478691 is about 3388.0216941454. The cubic root of 11478691 is about 225.5783704407.

The spelling of 11478691 in words is "eleven million, four hundred seventy-eight thousand, six hundred ninety-one".