675945 has 20 divisors (see below), whose sum is σ = 1212420. Its totient is φ = 360288.

The previous prime is 675931. The next prime is 675959. The reversal of 675945 is 549576.

675945 is a `hidden beast` number, since 67 + 594 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (675931) and next prime (675959).

It can be written as a sum of positive squares in 2 ways, for example, as 301401 + 374544 = 549^2 + 612^2 .

It is not a de Polignac number, because 675945 - 2⁴ = 675929 is a prime.

It is a nialpdrome in base 15.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 430 + ... + 1239.

It is an arithmetic number, because the mean of its divisors is an integer number (60621).

2⁶⁷⁵⁹⁴⁵ is an apocalyptic number.

It is an amenable number.

675945 is a deficient number, since it is larger than the sum of its proper divisors (536475).

675945 is a wasteful number, since it uses less digits than its factorization.

675945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1686 (or 1677 counting only the distinct ones).

The product of its digits is 37800, while the sum is 36.

The square root of 675945 is about 822.1587437959. The cubic root of 675945 is about 87.7614493060.

The spelling of 675945 in words is "six hundred seventy-five thousand, nine hundred forty-five".