406646506761 has 8 divisors (see below), whose sum is σ = 591485828064. Its totient is φ = 246452428320.

The previous prime is 406646506759. The next prime is 406646506787. The reversal of 406646506761 is 167605646604.

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

It is not a de Polignac number, because 406646506761 - 2¹ = 406646506759 is a prime.

It is a super-2 number, since 2×406646506761² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (406646506261) 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 7 ways as a sum of consecutive naturals, for example, 6161310676 + ... + 6161310741.

It is an arithmetic number, because the mean of its divisors is an integer number (73935728508).

Almost surely, 2^406646506761 is an apocalyptic number.

It is an amenable number.

406646506761 is a deficient number, since it is larger than the sum of its proper divisors (184839321303).

406646506761 is a wasteful number, since it uses less digits than its factorization.

406646506761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12322621431.

The product of its (nonzero) digits is 4354560, while the sum is 51.

The spelling of 406646506761 in words is "four hundred six billion, six hundred forty-six million, five hundred six thousand, seven hundred sixty-one".