677305 has 4 divisors (see below), whose sum is σ = 812772. Its totient is φ = 541840.

The previous prime is 677239. The next prime is 677309. The reversal of 677305 is 503776.

677305 = T₅₁₈ + T₅₁₉ + ... + T₅₂₂.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 163216 + 514089 = 404^2 + 717^2 .

It is not a de Polignac number, because 677305 - 2⁷ = 677177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (677309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67726 + ... + 67735.

It is an arithmetic number, because the mean of its divisors is an integer number (203193).

2⁶⁷⁷³⁰⁵ is an apocalyptic number.

It is an amenable number.

677305 is a deficient number, since it is larger than the sum of its proper divisors (135467).

677305 is a wasteful number, since it uses less digits than its factorization.

677305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135466.

The product of its (nonzero) digits is 4410, while the sum is 28.

The square root of 677305 is about 822.9854190689. The cubic root of 677305 is about 87.8202684962.

The spelling of 677305 in words is "six hundred seventy-seven thousand, three hundred five".