2897813 has 4 divisors (see below), whose sum is σ = 2965248. Its totient is φ = 2830380.

The previous prime is 2897801. The next prime is 2897819. The reversal of 2897813 is 3187982.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2897813 - 2¹² = 2893717 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2897819) 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, 33653 + ... + 33738.

It is an arithmetic number, because the mean of its divisors is an integer number (741312).

2^2897813 is an apocalyptic number.

It is an amenable number.

2897813 is a deficient number, since it is larger than the sum of its proper divisors (67435).

2897813 is an equidigital number, since it uses as much as digits as its factorization.

2897813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67434.

The product of its digits is 24192, while the sum is 38.

The square root of 2897813 is about 1702.2963901742. The cubic root of 2897813 is about 142.5684579248.

The spelling of 2897813 in words is "two million, eight hundred ninety-seven thousand, eight hundred thirteen".