406648668 has 24 divisors (see below), whose sum is σ = 949188240. Its totient is φ = 135500800.

The previous prime is 406648667. The next prime is 406648673. The reversal of 406648668 is 866846604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (406648667) 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, 47518 + ... + 55418.

It is an arithmetic number, because the mean of its divisors is an integer number (39549510).

Almost surely, 2^406648668 is an apocalyptic number.

It is an amenable number.

406648668 is an abundant number, since it is smaller than the sum of its proper divisors (542539572).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

406648668 is a wasteful number, since it uses less digits than its factorization.

406648668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12197 (or 12195 counting only the distinct ones).

The product of its (nonzero) digits is 1327104, while the sum is 48.

The square root of 406648668 is about 20165.5316815600. The cubic root of 406648668 is about 740.8662050519.

The spelling of 406648668 in words is "four hundred six million, six hundred forty-eight thousand, six hundred sixty-eight".