406012687 has 2 divisors, whose sum is σ = 406012688. Its totient is φ = 406012686.

The previous prime is 406012681. The next prime is 406012693. The reversal of 406012687 is 786210604.

It is a balanced prime because it is at equal distance from previous prime (406012681) and next prime (406012693).

It is a cyclic number.

It is not a de Polignac number, because 406012687 - 2¹⁹ = 405488399 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (406012681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 203006343 + 203006344.

It is an arithmetic number, because the mean of its divisors is an integer number (203006344).

Almost surely, 2^406012687 is an apocalyptic number.

406012687 is a deficient number, since it is larger than the sum of its proper divisors (1).

406012687 is an equidigital number, since it uses as much as digits as its factorization.

406012687 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 406012687 is about 20149.7564997694. The cubic root of 406012687 is about 740.4797759186.

The spelling of 406012687 in words is "four hundred six million, twelve thousand, six hundred eighty-seven".