11378691 has 8 divisors (see below), whose sum is σ = 16857360. Its totient is φ = 7585776.

The previous prime is 11378687. The next prime is 11378707. The reversal of 11378691 is 19687311.

It is not a de Polignac number, because 11378691 - 2² = 11378687 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11378641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 210690 + ... + 210743.

It is an arithmetic number, because the mean of its divisors is an integer number (2107170).

Almost surely, 2^11378691 is an apocalyptic number.

11378691 is a deficient number, since it is larger than the sum of its proper divisors (5478669).

11378691 is an equidigital number, since it uses as much as digits as its factorization.

11378691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 421442 (or 421436 counting only the distinct ones).

The product of its digits is 9072, while the sum is 36.

The square root of 11378691 is about 3373.2315366722. The cubic root of 11378691 is about 224.9213947642.

The spelling of 11378691 in words is "eleven million, three hundred seventy-eight thousand, six hundred ninety-one".