11691667 has 16 divisors (see below), whose sum is σ = 13108480. Its totient is φ = 10357632.

The previous prime is 11691661. The next prime is 11691671. The reversal of 11691667 is 76619611.

11691667 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11691667 - 2⁷ = 11691539 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11691661) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52318 + ... + 52540.

It is an arithmetic number, because the mean of its divisors is an integer number (819280).

Almost surely, 2^11691667 is an apocalyptic number.

11691667 is a deficient number, since it is larger than the sum of its proper divisors (1416813).

11691667 is a wasteful number, since it uses less digits than its factorization.

11691667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 382.

The product of its digits is 13608, while the sum is 37.

The square root of 11691667 is about 3419.3079709204. The cubic root of 11691667 is about 226.9649593037.

The spelling of 11691667 in words is "eleven million, six hundred ninety-one thousand, six hundred sixty-seven".