677434 has 4 divisors (see below), whose sum is σ = 1016154. Its totient is φ = 338716.

The previous prime is 677423. The next prime is 677441. The reversal of 677434 is 434776.

677434 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.

It can be written as a sum of positive squares in only one way, i.e., 378225 + 299209 = 615^2 + 547^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 677396 and 677405.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 169357 + ... + 169360.

2⁶⁷⁷⁴³⁴ is an apocalyptic number.

677434 is a deficient number, since it is larger than the sum of its proper divisors (338720).

677434 is a wasteful number, since it uses less digits than its factorization.

677434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338719.

The product of its digits is 14112, while the sum is 31.

The square root of 677434 is about 823.0637885365. The cubic root of 677434 is about 87.8258435796.

It can be divided in two parts, 677 and 434, that added together give a palindrome (1111).

The spelling of 677434 in words is "six hundred seventy-seven thousand, four hundred thirty-four".