300649 has 2 divisors, whose sum is σ = 300650. Its totient is φ = 300648.

The previous prime is 300647. The next prime is 300661. The reversal of 300649 is 946003.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 243049 + 57600 = 493^2 + 240^2 .

It is an emirp because it is prime and its reverse (946003) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 300649 - 2¹ = 300647 is a prime.

Together with 300647, it forms a pair of twin primes.

300649 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (300647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 150324 + 150325.

It is an arithmetic number, because the mean of its divisors is an integer number (150325).

2³⁰⁰⁶⁴⁹ is an apocalyptic number.

It is an amenable number.

300649 is a deficient number, since it is larger than the sum of its proper divisors (1).

300649 is an equidigital number, since it uses as much as digits as its factorization.

300649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 300649 is about 548.3146906659. The cubic root of 300649 is about 66.9915337932.

It can be divided in two parts, 300 and 649, that added together give a palindrome (949).

The spelling of 300649 in words is "three hundred thousand, six hundred forty-nine".