406012705 has 16 divisors (see below), whose sum is σ = 557714304. Its totient is φ = 277960320.

The previous prime is 406012703. The next prime is 406012727. The reversal of 406012705 is 507210604.

It is not a de Polignac number, because 406012705 - 2¹ = 406012703 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 406012705.

It is not an unprimeable number, because it can be changed into a prime (406012703) 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 15 ways as a sum of consecutive naturals, for example, 13485 + ... + 31525.

It is an arithmetic number, because the mean of its divisors is an integer number (34857144).

Almost surely, 2^406012705 is an apocalyptic number.

It is an amenable number.

406012705 is a deficient number, since it is larger than the sum of its proper divisors (151701599).

406012705 is a wasteful number, since it uses less digits than its factorization.

406012705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18696.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 406012705 is about 20149.7569464249. The cubic root of 406012705 is about 740.4797868613.

The spelling of 406012705 in words is "four hundred six million, twelve thousand, seven hundred five".