11161690 has 16 divisors (see below), whose sum is σ = 21273192. Its totient is φ = 4201984.

The previous prime is 11161687. The next prime is 11161763. The reversal of 11161690 is 9616111.

It can be written as a sum of positive squares in 4 ways, for example, as 11148921 + 12769 = 3339^2 + 113^2 .

It is a super-2 number, since 2×11161690² = 249166647312200, which contains 22 as substring.

It is a zygodrome in base 4.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32659 + ... + 32998.

Almost surely, 2^11161690 is an apocalyptic number.

11161690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11161690 is a deficient number, since it is larger than the sum of its proper divisors (10111502).

11161690 is a wasteful number, since it uses less digits than its factorization.

11161690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65681.

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

The square root of 11161690 is about 3340.9115522564. The cubic root of 11161690 is about 223.4823959696.

The spelling of 11161690 in words is "eleven million, one hundred sixty-one thousand, six hundred ninety".