676406 has 4 divisors (see below), whose sum is σ = 1014612. Its totient is φ = 338202.

The previous prime is 676391. The next prime is 676409. The reversal of 676406 is 604676.

It is a semiprime because it is the product of two primes.

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 676406.

It is not an unprimeable number, because it can be changed into a prime (676409) by changing a digit.

676406 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 169100 + ... + 169103.

It is an arithmetic number, because the mean of its divisors is an integer number (253653).

2⁶⁷⁶⁴⁰⁶ is an apocalyptic number.

676406 is a deficient number, since it is larger than the sum of its proper divisors (338206).

676406 is a wasteful number, since it uses less digits than its factorization.

676406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 338205.

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 676406 is about 822.4390554929. The cubic root of 676406 is about 87.7813961133.

The spelling of 676406 in words is "six hundred seventy-six thousand, four hundred six".