1677307649 has 2 divisors, whose sum is σ = 1677307650. Its totient is φ = 1677307648.

The previous prime is 1677307613. The next prime is 1677307679. The reversal of 1677307649 is 9467037761.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1295496049 + 381811600 = 35993^2 + 19540^2 .

It is an emirp because it is prime and its reverse (9467037761) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1677307649 - 2⁸ = 1677307393 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1677307597 and 1677307606.

It is not a weakly prime, because it can be changed into another prime (1677307679) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 838653824 + 838653825.

It is an arithmetic number, because the mean of its divisors is an integer number (838653825).

Almost surely, 2^1677307649 is an apocalyptic number.

It is an amenable number.

1677307649 is a deficient number, since it is larger than the sum of its proper divisors (1).

1677307649 is an equidigital number, since it uses as much as digits as its factorization.

1677307649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1333584, while the sum is 50.

The square root of 1677307649 is about 40954.9465754749. The cubic root of 1677307649 is about 1188.1490063999.

The spelling of 1677307649 in words is "one billion, six hundred seventy-seven million, three hundred seven thousand, six hundred forty-nine".