2786797 has 6 divisors (see below), whose sum is σ = 3007662. Its totient is φ = 2566872.

The previous prime is 2786789. The next prime is 2786809. The reversal of 2786797 is 7976872.

It can be written as a sum of positive squares in only one way, i.e., 1929321 + 857476 = 1389^2 + 926^2 .

It is not a de Polignac number, because 2786797 - 2³ = 2786789 is a prime.

It is a Duffinian number.

2786797 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2780797) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5788 + ... + 6250.

It is an arithmetic number, because the mean of its divisors is an integer number (501277).

2^2786797 is an apocalyptic number.

It is an amenable number.

2786797 is a deficient number, since it is larger than the sum of its proper divisors (220865).

2786797 is an frugal number, since it uses more digits than its factorization.

2786797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 939 (or 476 counting only the distinct ones).

The product of its digits is 296352, while the sum is 46.

The square root of 2786797 is about 1669.3702405398. The cubic root of 2786797 is about 140.7240886483.

The spelling of 2786797 in words is "two million, seven hundred eighty-six thousand, seven hundred ninety-seven".