675988 has 12 divisors (see below), whose sum is σ = 1252692. Its totient is φ = 318080.

The previous prime is 675979. The next prime is 676007. The reversal of 675988 is 889576.

It is a happy number.

675988 is nontrivially palindromic in base 15.

It can be written as a sum of positive squares in 2 ways, for example, as 183184 + 492804 = 428^2 + 702^2 .

It is a super-2 number, since 2×675988² = 913919552288, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

675988 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4903 + ... + 5038.

It is an arithmetic number, because the mean of its divisors is an integer number (104391).

2⁶⁷⁵⁹⁸⁸ is an apocalyptic number.

675988 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

675988 is a deficient number, since it is larger than the sum of its proper divisors (576704).

675988 is a wasteful number, since it uses less digits than its factorization.

675988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9962 (or 9960 counting only the distinct ones).

The product of its digits is 120960, while the sum is 43.

The square root of 675988 is about 822.1848940476. The cubic root of 675988 is about 87.7633102376.

The spelling of 675988 in words is "six hundred seventy-five thousand, nine hundred eighty-eight".