676845 has 36 divisors (see below), whose sum is σ = 1284660. Its totient is φ = 329472.

The previous prime is 676829. The next prime is 676859. The reversal of 676845 is 548676.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 233289 + 443556 = 483^2 + 666^2 .

It is not a de Polignac number, because 676845 - 2⁴ = 676829 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

Its product of digits (40320) is a multiple of the sum of its prime factors (126).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 7561 + ... + 7649.

It is an arithmetic number, because the mean of its divisors is an integer number (35685).

2⁶⁷⁶⁸⁴⁵ is an apocalyptic number.

676845 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

676845 is a deficient number, since it is larger than the sum of its proper divisors (607815).

676845 is a wasteful number, since it uses less digits than its factorization.

676845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126 (or 110 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 676845 is about 822.7059012794. The cubic root of 676845 is about 87.8003825894.

It can be divided in two parts, 676 and 845, that added together give a square (1521 = 39²).

The spelling of 676845 in words is "six hundred seventy-six thousand, eight hundred forty-five".