2188966 has 8 divisors (see below), whose sum is σ = 3536064. Its totient is φ = 1010280.

The previous prime is 2188919. The next prime is 2188981. The reversal of 2188966 is 6698812.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42070 + ... + 42121.

It is an arithmetic number, because the mean of its divisors is an integer number (442008).

2^2188966 is an apocalyptic number.

2188966 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

2188966 is a deficient number, since it is larger than the sum of its proper divisors (1347098).

2188966 is a wasteful number, since it uses less digits than its factorization.

2188966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84206.

The product of its digits is 41472, while the sum is 40.

The square root of 2188966 is about 1479.5154612237. The cubic root of 2188966 is about 129.8413449139.

The spelling of 2188966 in words is "two million, one hundred eighty-eight thousand, nine hundred sixty-six".