7057649 has 2 divisors, whose sum is σ = 7057650. Its totient is φ = 7057648.

The previous prime is 7057637. The next prime is 7057651. The reversal of 7057649 is 9467507.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4545424 + 2512225 = 2132^2 + 1585^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7057649 is a prime.

Together with 7057651, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (7057249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3528824 + 3528825.

It is an arithmetic number, because the mean of its divisors is an integer number (3528825).

Almost surely, 2^7057649 is an apocalyptic number.

It is an amenable number.

7057649 is a deficient number, since it is larger than the sum of its proper divisors (1).

7057649 is an equidigital number, since it uses as much as digits as its factorization.

7057649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 52920, while the sum is 38.

The square root of 7057649 is about 2656.6236090195. The cubic root of 7057649 is about 191.8168192850.

The spelling of 7057649 in words is "seven million, fifty-seven thousand, six hundred forty-nine".