406666351 has 32 divisors (see below), whose sum is σ = 517637120. Its totient is φ = 310915584.

The previous prime is 406666301. The next prime is 406666357. The reversal of 406666351 is 153666604.

It is not a de Polignac number, because 406666351 - 2²¹ = 404569199 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 406666351.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (406666357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 402535 + ... + 403543.

It is an arithmetic number, because the mean of its divisors is an integer number (16176160).

Almost surely, 2^406666351 is an apocalyptic number.

406666351 is a deficient number, since it is larger than the sum of its proper divisors (110970769).

406666351 is a wasteful number, since it uses less digits than its factorization.

406666351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1175.

The product of its (nonzero) digits is 77760, while the sum is 37.

The square root of 406666351 is about 20165.9701229571. The cubic root of 406666351 is about 740.8769436806.

The spelling of 406666351 in words is "four hundred six million, six hundred sixty-six thousand, three hundred fifty-one".