677489 has 4 divisors (see below), whose sum is σ = 679140. Its totient is φ = 675840.

The previous prime is 677473. The next prime is 677531. The reversal of 677489 is 984776.

677489 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 187489 + 490000 = 433^2 + 700^2 .

It is a cyclic number.

It is not a de Polignac number, because 677489 - 2⁴ = 677473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (677459) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 329 + ... + 1209.

It is an arithmetic number, because the mean of its divisors is an integer number (169785).

2⁶⁷⁷⁴⁸⁹ is an apocalyptic number.

It is an amenable number.

677489 is a deficient number, since it is larger than the sum of its proper divisors (1651).

677489 is an equidigital number, since it uses as much as digits as its factorization.

677489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1650.

The product of its digits is 84672, while the sum is 41.

The square root of 677489 is about 823.0971996065. The cubic root of 677489 is about 87.8282203379.

The spelling of 677489 in words is "six hundred seventy-seven thousand, four hundred eighty-nine".