676638 has 12 divisors (see below), whose sum is σ = 1466088. Its totient is φ = 225540.

The previous prime is 676601. The next prime is 676649. The reversal of 676638 is 836676.

It is a happy number.

676638 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

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 676638.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 18778 + ... + 18813.

It is an arithmetic number, because the mean of its divisors is an integer number (122174).

2⁶⁷⁶⁶³⁸ is an apocalyptic number.

676638 is an abundant number, since it is smaller than the sum of its proper divisors (789450).

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

676638 is a wasteful number, since it uses less digits than its factorization.

676638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37599 (or 37596 counting only the distinct ones).

The product of its digits is 36288, while the sum is 36.

The square root of 676638 is about 822.5800872863. The cubic root of 676638 is about 87.7914309918.

The spelling of 676638 in words is "six hundred seventy-six thousand, six hundred thirty-eight".