675642 has 32 divisors (see below), whose sum is σ = 1529280. Its totient is φ = 197120.

The previous prime is 675629. The next prime is 675643. The reversal of 675642 is 246576.

It is a super-2 number, since 2×675642² = 912984224328, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (675643) by changing a digit.

675642 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 (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1738 + ... + 2090.

It is an arithmetic number, because the mean of its divisors is an integer number (47790).

2⁶⁷⁵⁶⁴² is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 675642, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (764640).

675642 is an abundant number, since it is smaller than the sum of its proper divisors (853638).

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

675642 is a wasteful number, since it uses less digits than its factorization.

675642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 398.

The product of its digits is 10080, while the sum is 30.

The square root of 675642 is about 821.9744521577. The cubic root of 675642 is about 87.7483339916.

The spelling of 675642 in words is "six hundred seventy-five thousand, six hundred forty-two".