677075891 has 2 divisors, whose sum is σ = 677075892. Its totient is φ = 677075890.

The previous prime is 677075837. The next prime is 677075933. The reversal of 677075891 is 198570776.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 677075891 - 2¹⁸ = 676813747 is a prime.

It is not a weakly prime, because it can be changed into another prime (677071891) 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, 338537945 + 338537946.

It is an arithmetic number, because the mean of its divisors is an integer number (338537946).

Almost surely, 2^677075891 is an apocalyptic number.

677075891 is a deficient number, since it is larger than the sum of its proper divisors (1).

677075891 is an equidigital number, since it uses as much as digits as its factorization.

677075891 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 740880, while the sum is 50.

The square root of 677075891 is about 26020.6819856821. The cubic root of 677075891 is about 878.1036518681.

The spelling of 677075891 in words is "six hundred seventy-seven million, seventy-five thousand, eight hundred ninety-one".