677426 has 8 divisors (see below), whose sum is σ = 1069680. Its totient is φ = 320868.

The previous prime is 677423. The next prime is 677441. The reversal of 677426 is 624776.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an Ulam number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 677392 and 677401.

It is not an unprimeable number, because it can be changed into a prime (677423) 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, 8876 + ... + 8951.

It is an arithmetic number, because the mean of its divisors is an integer number (133710).

2⁶⁷⁷⁴²⁶ is an apocalyptic number.

677426 is a deficient number, since it is larger than the sum of its proper divisors (392254).

677426 is a wasteful number, since it uses less digits than its factorization.

677426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17848.

The product of its digits is 14112, while the sum is 32.

The square root of 677426 is about 823.0589286315. The cubic root of 677426 is about 87.8254978586.

Subtracting from 677426 its reverse (624776), we obtain a triangular number (52650 = T₃₂₄).

The spelling of 677426 in words is "six hundred seventy-seven thousand, four hundred twenty-six".