677444 has 6 divisors (see below), whose sum is σ = 1185534. Its totient is φ = 338720.

The previous prime is 677441. The next prime is 677447. The reversal of 677444 is 444776.

It is an interprime number because it is at equal distance from previous prime (677441) and next prime (677447).

It can be written as a sum of positive squares in only one way, i.e., 407044 + 270400 = 638^2 + 520^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 677444.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 677444.

It is not an unprimeable number, because it can be changed into a prime (677441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84677 + ... + 84684.

It is an arithmetic number, because the mean of its divisors is an integer number (197589).

2⁶⁷⁷⁴⁴⁴ is an apocalyptic number.

It is an amenable number.

677444 is a deficient number, since it is larger than the sum of its proper divisors (508090).

677444 is a wasteful number, since it uses less digits than its factorization.

677444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169365 (or 169363 counting only the distinct ones).

The product of its digits is 18816, while the sum is 32.

The square root of 677444 is about 823.0698633773. The cubic root of 677444 is about 87.8262757270.

The spelling of 677444 in words is "six hundred seventy-seven thousand, four hundred forty-four".