11782197 has 18 divisors (see below), whose sum is σ = 19798038. Its totient is φ = 6732432.

The previous prime is 11782189. The next prime is 11782213. The reversal of 11782197 is 79128711.

11782197 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 8520561 + 3261636 = 2919^2 + 1806^2 .

It is not a de Polignac number, because 11782197 - 2³ = 11782189 is a prime.

It is a super-2 number, since 2×11782197² = 277640332293618, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11782117) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 12918 + ... + 13799.

It is an arithmetic number, because the mean of its divisors is an integer number (1099891).

Almost surely, 2^11782197 is an apocalyptic number.

It is an amenable number.

11782197 is a deficient number, since it is larger than the sum of its proper divisors (8015841).

11782197 is a wasteful number, since it uses less digits than its factorization.

11782197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26737 (or 26727 counting only the distinct ones).

The product of its digits is 7056, while the sum is 36.

The square root of 11782197 is about 3432.5205024879. The cubic root of 11782197 is about 227.5492595502.

It can be divided in two parts, 1178 and 2197, that added together give a cube (3375 = 15³).

The spelling of 11782197 in words is "eleven million, seven hundred eighty-two thousand, one hundred ninety-seven".