677751691 has 2 divisors, whose sum is σ = 677751692. Its totient is φ = 677751690.

The previous prime is 677751673. The next prime is 677751709. The reversal of 677751691 is 196157776.

677751691 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (677751673) and next prime (677751709).

It is a cyclic number.

It is not a de Polignac number, because 677751691 - 2¹⁹ = 677227403 is a prime.

It is not a weakly prime, because it can be changed into another prime (677751601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 338875845 + 338875846.

It is an arithmetic number, because the mean of its divisors is an integer number (338875846).

Almost surely, 2^677751691 is an apocalyptic number.

677751691 is a deficient number, since it is larger than the sum of its proper divisors (1).

677751691 is an equidigital number, since it uses as much as digits as its factorization.

677751691 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 555660, while the sum is 49.

The square root of 677751691 is about 26033.6645710895. The cubic root of 677751691 is about 878.3957043694.

The spelling of 677751691 in words is "six hundred seventy-seven million, seven hundred fifty-one thousand, six hundred ninety-one".