655671 has 8 divisors (see below), whose sum is σ = 920320. Its totient is φ = 414072.

The previous prime is 655657. The next prime is 655687. The reversal of 655671 is 176556.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 655671 - 2¹¹ = 653623 is a prime.

It is a Duffinian number.

655671 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (655601) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5695 + ... + 5808.

It is an arithmetic number, because the mean of its divisors is an integer number (115040).

2⁶⁵⁵⁶⁷¹ is an apocalyptic number.

655671 is a deficient number, since it is larger than the sum of its proper divisors (264649).

655671 is a wasteful number, since it uses less digits than its factorization.

655671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11525.

The product of its digits is 6300, while the sum is 30.

The square root of 655671 is about 809.7351418828. The cubic root of 655671 is about 86.8751015302.

It can be divided in two parts, 655 and 671, that added together give a triangular number (1326 = T₅₁).

The spelling of 655671 in words is "six hundred fifty-five thousand, six hundred seventy-one".