2180397 has 8 divisors (see below), whose sum is σ = 2920320. Its totient is φ = 1447040.

The previous prime is 2180393. The next prime is 2180417. The reversal of 2180397 is 7930812.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 2180397 - 2² = 2180393 is a prime.

2180397 is a lucky number.

It is a zygodrome in base 6.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2180393) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 804 + ... + 2237.

It is an arithmetic number, because the mean of its divisors is an integer number (365040).

2^2180397 is an apocalyptic number.

It is an amenable number.

2180397 is a deficient number, since it is larger than the sum of its proper divisors (739923).

2180397 is a wasteful number, since it uses less digits than its factorization.

2180397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3283.

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 2180397 is about 1476.6167410672. The cubic root of 2180397 is about 129.6716962501.

The spelling of 2180397 in words is "two million, one hundred eighty thousand, three hundred ninety-seven".