675591 has 16 divisors (see below), whose sum is σ = 1050624. Its totient is φ = 378144.

The previous prime is 675581. The next prime is 675593. The reversal of 675591 is 195576.

675591 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 675591 - 2⁵ = 675559 is a prime.

It is an Ulam number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 675591.

It is not an unprimeable number, because it can be changed into a prime (675593) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 810 + ... + 1416.

It is an arithmetic number, because the mean of its divisors is an integer number (65664).

2⁶⁷⁵⁵⁹¹ is an apocalyptic number.

675591 is a deficient number, since it is larger than the sum of its proper divisors (375033).

675591 is a wasteful number, since it uses less digits than its factorization.

675591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 670.

The product of its digits is 9450, while the sum is 33.

The square root of 675591 is about 821.9434287103. The cubic root of 675591 is about 87.7461260780.

Multiplying 675591 by its sum of digits (33), we get a triangular number (22294503 = T₆₆₇₇).

The spelling of 675591 in words is "six hundred seventy-five thousand, five hundred ninety-one".