406715 has 4 divisors (see below), whose sum is σ = 488064. Its totient is φ = 325368.

The previous prime is 406699. The next prime is 406717. The reversal of 406715 is 517604.

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 406715 - 2⁴ = 406699 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (406717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40667 + ... + 40676.

It is an arithmetic number, because the mean of its divisors is an integer number (122016).

2⁴⁰⁶⁷¹⁵ is an apocalyptic number.

406715 is a deficient number, since it is larger than the sum of its proper divisors (81349).

406715 is an equidigital number, since it uses as much as digits as its factorization.

406715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81348.

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 406715 is about 637.7421108881. The cubic root of 406715 is about 74.0906485905.

Subtracting 406715 from its reverse (517604), we obtain a square (110889 = 333²).

The spelling of 406715 in words is "four hundred six thousand, seven hundred fifteen".