677377609 has 4 divisors (see below), whose sum is σ = 684084420. Its totient is φ = 670670800.

The previous prime is 677377601. The next prime is 677377619. The reversal of 677377609 is 906773776.

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 612414009 + 64963600 = 24747^2 + 8060^2 .

It is a cyclic number.

It is not a de Polignac number, because 677377609 - 2³ = 677377601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (677377601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3353254 + ... + 3353455.

It is an arithmetic number, because the mean of its divisors is an integer number (171021105).

Almost surely, 2^677377609 is an apocalyptic number.

It is an amenable number.

677377609 is a deficient number, since it is larger than the sum of its proper divisors (6706811).

677377609 is a wasteful number, since it uses less digits than its factorization.

677377609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6706810.

The product of its (nonzero) digits is 2333772, while the sum is 52.

The square root of 677377609 is about 26026.4789973596. The cubic root of 677377609 is about 878.2340657733.

The spelling of 677377609 in words is "six hundred seventy-seven million, three hundred seventy-seven thousand, six hundred nine".