11691016 has 16 divisors (see below), whose sum is σ = 22280940. Its totient is φ = 5749440.

The previous prime is 11691011. The next prime is 11691037. The reversal of 11691016 is 61019611.

It can be written as a sum of positive squares in 2 ways, for example, as 11492100 + 198916 = 3390^2 + 446^2 .

It is a super-2 number, since 2×11691016² = 273359710224512, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11691011) 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, 11491 + ... + 12466.

Almost surely, 2^11691016 is an apocalyptic number.

11691016 is the 2163-rd centered pentagonal number.

It is an amenable number.

11691016 is a deficient number, since it is larger than the sum of its proper divisors (10589924).

11691016 is a wasteful number, since it uses less digits than its factorization.

11691016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24024 (or 24020 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 25.

The square root of 11691016 is about 3419.2127748942. The cubic root of 11691016 is about 226.9607467042.

The spelling of 11691016 in words is "eleven million, six hundred ninety-one thousand, sixteen".