677707 has 4 divisors (see below), whose sum is σ = 680056. Its totient is φ = 675360.

The previous prime is 677687. The next prime is 677717. The reversal of 677707 is 707776.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-677707 is a prime.

It is a Duffinian number.

677707 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (677717) 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, 669 + ... + 1342.

It is an arithmetic number, because the mean of its divisors is an integer number (170014).

2⁶⁷⁷⁷⁰⁷ is an apocalyptic number.

677707 is a deficient number, since it is larger than the sum of its proper divisors (2349).

677707 is a wasteful number, since it uses less digits than its factorization.

677707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2348.

The product of its (nonzero) digits is 14406, while the sum is 34.

The square root of 677707 is about 823.2296155994. The cubic root of 677707 is about 87.8376396784.

The spelling of 677707 in words is "six hundred seventy-seven thousand, seven hundred seven".