2197958 has 16 divisors (see below), whose sum is σ = 3966720. Its totient is φ = 892296.

The previous prime is 2197933. The next prime is 2197961. The reversal of 2197958 is 8597912.

It is a Curzon number.

It is a congruent number.

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, 3866 + ... + 4397.

It is an arithmetic number, because the mean of its divisors is an integer number (247920).

2^2197958 is an apocalyptic number.

2197958 is a deficient number, since it is larger than the sum of its proper divisors (1768762).

2197958 is a wasteful number, since it uses less digits than its factorization.

2197958 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8291.

The product of its digits is 45360, while the sum is 41.

The square root of 2197958 is about 1482.5511795550. The cubic root of 2197958 is about 130.0188927177.

It can be divided in two parts, 21 and 97958, that added together give a palindrome (97979).

The spelling of 2197958 in words is "two million, one hundred ninety-seven thousand, nine hundred fifty-eight".