677447 has 2 divisors, whose sum is σ = 677448. Its totient is φ = 677446.

The previous prime is 677441. The next prime is 677459. The reversal of 677447 is 744776.

677447 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-677447 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (677441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 338723 + 338724.

It is an arithmetic number, because the mean of its divisors is an integer number (338724).

2⁶⁷⁷⁴⁴⁷ is an apocalyptic number.

677447 is a deficient number, since it is larger than the sum of its proper divisors (1).

677447 is an equidigital number, since it uses as much as digits as its factorization.

677447 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32928, while the sum is 35.

The square root of 677447 is about 823.0716858209. The cubic root of 677447 is about 87.8264053704.

The spelling of 677447 in words is "six hundred seventy-seven thousand, four hundred forty-seven".