2108997 has 28 divisors (see below), whose sum is σ = 3462624. Its totient is φ = 1273320.

The previous prime is 2108993. The next prime is 2109011. The reversal of 2108997 is 7998012.

It is a happy number.

It is not a de Polignac number, because 2108997 - 2² = 2108993 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2108993) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 7888 + ... + 8150.

2^2108997 is an apocalyptic number.

2108997 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

2108997 is a deficient number, since it is larger than the sum of its proper divisors (1353627).

2108997 is an equidigital number, since it uses as much as digits as its factorization.

2108997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292 (or 277 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 36.

The square root of 2108997 is about 1452.2386167569. The cubic root of 2108997 is about 128.2405348509.

The spelling of 2108997 in words is "two million, one hundred eight thousand, nine hundred ninety-seven".