655071 has 4 divisors (see below), whose sum is σ = 873432. Its totient is φ = 436712.

The previous prime is 655069. The next prime is 655087. The reversal of 655071 is 170556.

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 655071 - 2¹ = 655069 is a prime.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (655001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109176 + ... + 109181.

It is an arithmetic number, because the mean of its divisors is an integer number (218358).

2⁶⁵⁵⁰⁷¹ is an apocalyptic number.

655071 is a deficient number, since it is larger than the sum of its proper divisors (218361).

655071 is a wasteful number, since it uses less digits than its factorization.

655071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218360.

The product of its (nonzero) digits is 1050, while the sum is 24.

The square root of 655071 is about 809.3645655698. The cubic root of 655071 is about 86.8485938412.

The spelling of 655071 in words is "six hundred fifty-five thousand, seventy-one".