677659 has 4 divisors (see below), whose sum is σ = 687016. Its totient is φ = 668304.

The previous prime is 677657. The next prime is 677681. The reversal of 677659 is 956776.

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

It is a cyclic number.

It is not a de Polignac number, because 677659 - 2¹ = 677657 is a prime.

It is a Duffinian number.

677659 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (677657) 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, 4569 + ... + 4714.

It is an arithmetic number, because the mean of its divisors is an integer number (171754).

2⁶⁷⁷⁶⁵⁹ is an apocalyptic number.

677659 is a deficient number, since it is larger than the sum of its proper divisors (9357).

677659 is an equidigital number, since it uses as much as digits as its factorization.

677659 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9356.

The product of its digits is 79380, while the sum is 40.

The square root of 677659 is about 823.2004616131. The cubic root of 677659 is about 87.8355658686.

The spelling of 677659 in words is "six hundred seventy-seven thousand, six hundred fifty-nine".