406071 has 6 divisors (see below), whose sum is σ = 586560. Its totient is φ = 270708.

The previous prime is 406067. The next prime is 406073. The reversal of 406071 is 170604.

It is not a de Polignac number, because 406071 - 2² = 406067 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (406073) 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, 22551 + ... + 22568.

It is an arithmetic number, because the mean of its divisors is an integer number (97760).

2⁴⁰⁶⁰⁷¹ is an apocalyptic number.

406071 is a deficient number, since it is larger than the sum of its proper divisors (180489).

406071 is a wasteful number, since it uses less digits than its factorization.

406071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45125 (or 45122 counting only the distinct ones).

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

The square root of 406071 is about 637.2370045752. The cubic root of 406071 is about 74.0515224343.

Adding to 406071 its reverse (170604), we get a palindrome (576675).

The spelling of 406071 in words is "four hundred six thousand, seventy-one".