677648 has 20 divisors (see below), whose sum is σ = 1346268. Its totient is φ = 330240.

The previous prime is 677647. The next prime is 677657. The reversal of 677648 is 846776.

It can be written as a sum of positive squares in 2 ways, for example, as 350464 + 327184 = 592^2 + 572^2 .

It is not an unprimeable number, because it can be changed into a prime (677647) 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, 140 + ... + 1172.

2⁶⁷⁷⁶⁴⁸ is an apocalyptic number.

It is an amenable number.

677648 is a deficient number, since it is larger than the sum of its proper divisors (668620).

677648 is a wasteful number, since it uses less digits than its factorization.

677648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1082 (or 1076 counting only the distinct ones).

The product of its digits is 56448, while the sum is 38.

The square root of 677648 is about 823.1937803458. The cubic root of 677648 is about 87.8350906068.

The spelling of 677648 in words is "six hundred seventy-seven thousand, six hundred forty-eight".