642471006 has 16 divisors (see below), whose sum is σ = 1340809344. Its totient is φ = 204845784.

The previous prime is 642470993. The next prime is 642471013. The reversal of 642471006 is 600174246.

642471006 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2327656 + ... + 2327931.

It is an arithmetic number, because the mean of its divisors is an integer number (83800584).

Almost surely, 2^642471006 is an apocalyptic number.

642471006 is an abundant number, since it is smaller than the sum of its proper divisors (698338338).

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

642471006 is a wasteful number, since it uses less digits than its factorization.

642471006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4655615.

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 642471006 is about 25347.0117765389. The cubic root of 642471006 is about 862.8815394082.

The spelling of 642471006 in words is "six hundred forty-two million, four hundred seventy-one thousand, six".