675667 has 4 divisors (see below), whose sum is σ = 677416. Its totient is φ = 673920.

The previous prime is 675643. The next prime is 675713. The reversal of 675667 is 766576.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 675667 - 2⁷ = 675539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (675607) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 9 + ... + 1162.

It is an arithmetic number, because the mean of its divisors is an integer number (169354).

2⁶⁷⁵⁶⁶⁷ is an apocalyptic number.

675667 is a deficient number, since it is larger than the sum of its proper divisors (1749).

675667 is a wasteful number, since it uses less digits than its factorization.

675667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1748.

The product of its digits is 52920, while the sum is 37.

The square root of 675667 is about 821.9896593024. The cubic root of 675667 is about 87.7494162617.

Subtracting 675667 from its reverse (766576), we obtain a palindrome (90909).

The spelling of 675667 in words is "six hundred seventy-five thousand, six hundred sixty-seven".