677384 has 8 divisors (see below), whose sum is σ = 1270110. Its totient is φ = 338688.

The previous prime is 677371. The next prime is 677387. The reversal of 677384 is 483776.

It can be written as a sum of positive squares in only one way, i.e., 448900 + 228484 = 670^2 + 478^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (677387) by changing a digit.

677384 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 (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42329 + ... + 42344.

677384 is a Friedman number, since it can be written as 8+7*7*(6*4)^3, using all its digits and the basic arithmetic operations.

2⁶⁷⁷³⁸⁴ is an apocalyptic number.

It is an amenable number.

677384 is a deficient number, since it is larger than the sum of its proper divisors (592726).

677384 is a wasteful number, since it uses less digits than its factorization.

677384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84679 (or 84675 counting only the distinct ones).

The product of its digits is 28224, while the sum is 35.

The square root of 677384 is about 823.0334136595. The cubic root of 677384 is about 87.8236827786.

The spelling of 677384 in words is "six hundred seventy-seven thousand, three hundred eighty-four".