677748 has 12 divisors (see below), whose sum is σ = 1581440. Its totient is φ = 225912.

The previous prime is 677737. The next prime is 677767. The reversal of 677748 is 847776.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 677748.

It is an unprimeable number.

677748 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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, 28228 + ... + 28251.

2⁶⁷⁷⁷⁴⁸ is an apocalyptic number.

It is an amenable number.

677748 is an abundant number, since it is smaller than the sum of its proper divisors (903692).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

677748 is a wasteful number, since it uses less digits than its factorization.

677748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56486 (or 56484 counting only the distinct ones).

The product of its digits is 65856, while the sum is 39.

The square root of 677748 is about 823.2545171452. The cubic root of 677748 is about 87.8394109801.

The spelling of 677748 in words is "six hundred seventy-seven thousand, seven hundred forty-eight".