2806457 has 2 divisors, whose sum is σ = 2806458. Its totient is φ = 2806456.

The previous prime is 2806439. The next prime is 2806459. The reversal of 2806457 is 7546082.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2725801 + 80656 = 1651^2 + 284^2 .

It is a cyclic number.

It is not a de Polignac number, because 2806457 - 2⁸ = 2806201 is a prime.

Together with 2806459, it forms a pair of twin primes.

It is a Chen prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (2806459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1403228 + 1403229.

It is an arithmetic number, because the mean of its divisors is an integer number (1403229).

2^2806457 is an apocalyptic number.

It is an amenable number.

2806457 is a deficient number, since it is larger than the sum of its proper divisors (1).

2806457 is an equidigital number, since it uses as much as digits as its factorization.

2806457 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 2806457 is about 1675.2483397992. The cubic root of 2806457 is about 141.0542352933.

The spelling of 2806457 in words is "two million, eight hundred six thousand, four hundred fifty-seven".