677724871 has 2 divisors, whose sum is σ = 677724872. Its totient is φ = 677724870.

The previous prime is 677724857. The next prime is 677724937. The reversal of 677724871 is 178427776.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 677724871 - 2⁷ = 677724743 is a prime.

It is a super-2 number, since 2×677724871² = 918622001543933282, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (677724811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 338862435 + 338862436.

It is an arithmetic number, because the mean of its divisors is an integer number (338862436).

Almost surely, 2^677724871 is an apocalyptic number.

677724871 is a deficient number, since it is larger than the sum of its proper divisors (1).

677724871 is an equidigital number, since it uses as much as digits as its factorization.

677724871 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 921984, while the sum is 49.

The square root of 677724871 is about 26033.1494637126. The cubic root of 677724871 is about 878.3841175872.

The spelling of 677724871 in words is "six hundred seventy-seven million, seven hundred twenty-four thousand, eight hundred seventy-one".