677700581 has 2 divisors, whose sum is σ = 677700582. Its totient is φ = 677700580.

The previous prime is 677700509. The next prime is 677700587. The reversal of 677700581 is 185007776.

677700581 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 652036225 + 25664356 = 25535^2 + 5066^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-677700581 is a prime.

It is a super-2 number, since 2×677700581² = 918556154975475122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (677700587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 338850290 + 338850291.

It is an arithmetic number, because the mean of its divisors is an integer number (338850291).

Almost surely, 2^677700581 is an apocalyptic number.

It is an amenable number.

677700581 is a deficient number, since it is larger than the sum of its proper divisors (1).

677700581 is an equidigital number, since it uses as much as digits as its factorization.

677700581 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 82320, while the sum is 41.

The square root of 677700581 is about 26032.6829389520. The cubic root of 677700581 is about 878.3736235524.

The spelling of 677700581 in words is "six hundred seventy-seven million, seven hundred thousand, five hundred eighty-one".