677377321 has 2 divisors, whose sum is σ = 677377322. Its totient is φ = 677377320.

The previous prime is 677377319. The next prime is 677377357. The reversal of 677377321 is 123773776.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 668739600 + 8637721 = 25860^2 + 2939^2 .

It is a cyclic number.

It is not a de Polignac number, because 677377321 - 2¹ = 677377319 is a prime.

Together with 677377319, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (677377361) 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, 338688660 + 338688661.

It is an arithmetic number, because the mean of its divisors is an integer number (338688661).

Almost surely, 2^677377321 is an apocalyptic number.

It is an amenable number.

677377321 is a deficient number, since it is larger than the sum of its proper divisors (1).

677377321 is an equidigital number, since it uses as much as digits as its factorization.

677377321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 259308, while the sum is 43.

The square root of 677377321 is about 26026.4734645322. The cubic root of 677377321 is about 878.2339413073.

The spelling of 677377321 in words is "six hundred seventy-seven million, three hundred seventy-seven thousand, three hundred twenty-one".