406615 has 8 divisors (see below), whose sum is σ = 532368. Its totient is φ = 295680.

The previous prime is 406591. The next prime is 406631. The reversal of 406615 is 516604.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 406615 - 2⁵ = 406583 is a prime.

It is a Duffinian number.

406615 is a lucky number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3642 + ... + 3751.

It is an arithmetic number, because the mean of its divisors is an integer number (66546).

2⁴⁰⁶⁶¹⁵ is an apocalyptic number.

406615 is a deficient number, since it is larger than the sum of its proper divisors (125753).

406615 is a wasteful number, since it uses less digits than its factorization.

406615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7409.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 406615 is about 637.6637044713. The cubic root of 406615 is about 74.0845758104.

The spelling of 406615 in words is "four hundred six thousand, six hundred fifteen".