660471 has 12 divisors (see below), whose sum is σ = 1024632. Its totient is φ = 377328.

The previous prime is 660449. The next prime is 660493. The reversal of 660471 is 174066.

It is an interprime number because it is at equal distance from previous prime (660449) and next prime (660493).

It is not a de Polignac number, because 660471 - 2¹³ = 652279 is a prime.

It is a super-3 number, since 3×660471³ = 864335826449001333, which contains 333 as substring.

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 660471.

It is not an unprimeable number, because it can be changed into a prime (660071) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2100 + ... + 2393.

It is an arithmetic number, because the mean of its divisors is an integer number (85386).

2⁶⁶⁰⁴⁷¹ is an apocalyptic number.

660471 is a deficient number, since it is larger than the sum of its proper divisors (364161).

660471 is a wasteful number, since it uses less digits than its factorization.

660471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4510 (or 4503 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 660471 is about 812.6936692260. The cubic root of 660471 is about 87.0865831122.

The spelling of 660471 in words is "six hundred sixty thousand, four hundred seventy-one".