11611690 has 8 divisors (see below), whose sum is σ = 20901060. Its totient is φ = 4644672.

The previous prime is 11611681. The next prime is 11611727. The reversal of 11611690 is 9611611.

It can be written as a sum of positive squares in 2 ways, for example, as 9603801 + 2007889 = 3099^2 + 1417^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×11611690² = 269662689312200, which contains 22 as substring.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 580575 + ... + 580594.

Almost surely, 2^11611690 is an apocalyptic number.

11611690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11611690 is a deficient number, since it is larger than the sum of its proper divisors (9289370).

11611690 is a wasteful number, since it uses less digits than its factorization.

11611690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1161176.

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

The square root of 11611690 is about 3407.5929921280. The cubic root of 11611690 is about 226.4462558495.

The spelling of 11611690 in words is "eleven million, six hundred eleven thousand, six hundred ninety".