406683505 has 8 divisors (see below), whose sum is σ = 513705600. Its totient is φ = 308223216.

The previous prime is 406683499. The next prime is 406683517. The reversal of 406683505 is 505386604.

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

It is a cyclic number.

It is not a de Polignac number, because 406683505 - 2¹⁵ = 406650737 is a prime.

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, 2140345 + ... + 2140534.

It is an arithmetic number, because the mean of its divisors is an integer number (64213200).

Almost surely, 2^406683505 is an apocalyptic number.

It is an amenable number.

406683505 is a deficient number, since it is larger than the sum of its proper divisors (107022095).

406683505 is a wasteful number, since it uses less digits than its factorization.

406683505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4280903.

The product of its (nonzero) digits is 86400, while the sum is 37.

The square root of 406683505 is about 20166.3954389474. The cubic root of 406683505 is about 740.8873607579.

It can be divided in two parts, 4066 and 83505, that added together give a triangular number (87571 = T₄₁₈).

The spelling of 406683505 in words is "four hundred six million, six hundred eighty-three thousand, five hundred five".