2768257 has 6 divisors (see below), whose sum is σ = 2894402. Its totient is φ = 2647392.

The previous prime is 2768251. The next prime is 2768261. The reversal of 2768257 is 7528672.

It can be written as a sum of positive squares in only one way, i.e., 2742336 + 25921 = 1656^2 + 161^2 .

It is a de Polignac number, because none of the positive numbers 2^k-2768257 is a prime.

It is a d-powerful number, because it can be written as 2⁴ + 7⁴ + 6⁸ + 8³ + 2¹⁸ + 5² + 7⁷ .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2768251) 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, 2088 + ... + 3145.

2^2768257 is an apocalyptic number.

It is an amenable number.

2768257 is a deficient number, since it is larger than the sum of its proper divisors (126145).

2768257 is an equidigital number, since it uses as much as digits as its factorization.

2768257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5279 (or 5256 counting only the distinct ones).

The product of its digits is 47040, while the sum is 37.

The square root of 2768257 is about 1663.8079817094. The cubic root of 2768257 is about 140.4113243464.

It can be divided in two parts, 2768 and 257, that added together give a square (3025 = 55²).

The spelling of 2768257 in words is "two million, seven hundred sixty-eight thousand, two hundred fifty-seven".