2197870 has 8 divisors (see below), whose sum is σ = 3956184. Its totient is φ = 879144.

The previous prime is 2197849. The next prime is 2197873. The reversal of 2197870 is 787912.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2197873) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109884 + ... + 109903.

It is an arithmetic number, because the mean of its divisors is an integer number (494523).

2^2197870 is an apocalyptic number.

2197870 is a deficient number, since it is larger than the sum of its proper divisors (1758314).

2197870 is a wasteful number, since it uses less digits than its factorization.

2197870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219794.

The product of its (nonzero) digits is 7056, while the sum is 34.

The square root of 2197870 is about 1482.5215006873. The cubic root of 2197870 is about 130.0171574988.

The spelling of 2197870 in words is "two million, one hundred ninety-seven thousand, eight hundred seventy".