2564347 has 2 divisors, whose sum is σ = 2564348. Its totient is φ = 2564346.

The previous prime is 2564333. The next prime is 2564363. The reversal of 2564347 is 7434652.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2564347 is a prime.

It is not a weakly prime, because it can be changed into another prime (2564327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1282173 + 1282174.

It is an arithmetic number, because the mean of its divisors is an integer number (1282174).

2^2564347 is an apocalyptic number.

2564347 is a deficient number, since it is larger than the sum of its proper divisors (1).

2564347 is an equidigital number, since it uses as much as digits as its factorization.

2564347 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20160, while the sum is 31.

The square root of 2564347 is about 1601.3578613165. The cubic root of 2564347 is about 136.8754617973.

Adding to 2564347 its reverse (7434652), we get a palindrome (9998999).

The spelling of 2564347 in words is "two million, five hundred sixty-four thousand, three hundred forty-seven".