40671 has 6 divisors (see below), whose sum is σ = 58760. Its totient is φ = 27108.

The previous prime is 40639. The next prime is 40693. The reversal of 40671 is 17604.

It is not a de Polignac number, because 40671 - 2⁵ = 40639 is a prime.

It is a Duffinian number.

40671 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40471) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2251 + ... + 2268.

2⁴⁰⁶⁷¹ is an apocalyptic number.

40671 is a deficient number, since it is larger than the sum of its proper divisors (18089).

40671 is a wasteful number, since it uses less digits than its factorization.

40671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4525 (or 4522 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 18.

The square root of 40671 is about 201.6705233791. The cubic root of 40671 is about 34.3896917915.

The spelling of 40671 in words is "forty thousand, six hundred seventy-one".