2783897 has 4 divisors (see below), whose sum is σ = 2904960. Its totient is φ = 2662836.

The previous prime is 2783887. The next prime is 2783909. The reversal of 2783897 is 7983872.

It is a happy number.

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 a de Polignac number, because none of the positive numbers 2^k-2783897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2783887) 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, 60497 + ... + 60542.

It is an arithmetic number, because the mean of its divisors is an integer number (726240).

2^2783897 is an apocalyptic number.

It is an amenable number.

2783897 is a deficient number, since it is larger than the sum of its proper divisors (121063).

2783897 is a wasteful number, since it uses less digits than its factorization.

2783897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121062.

The product of its digits is 169344, while the sum is 44.

The square root of 2783897 is about 1668.5014234336. The cubic root of 2783897 is about 140.6752582171.

The spelling of 2783897 in words is "two million, seven hundred eighty-three thousand, eight hundred ninety-seven".