642214663 has 8 divisors (see below), whose sum is σ = 645159600. Its totient is φ = 639277248.

The previous prime is 642214637. The next prime is 642214673. The reversal of 642214663 is 366412246.

642214663 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-642214663 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (642214613) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 228873 + ... + 231661.

It is an arithmetic number, because the mean of its divisors is an integer number (80644950).

Almost surely, 2^642214663 is an apocalyptic number.

642214663 is a deficient number, since it is larger than the sum of its proper divisors (2944937).

642214663 is a wasteful number, since it uses less digits than its factorization.

642214663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3761.

The product of its digits is 41472, while the sum is 34.

The square root of 642214663 is about 25341.9546010169. The cubic root of 642214663 is about 862.7667622092.

The spelling of 642214663 in words is "six hundred forty-two million, two hundred fourteen thousand, six hundred sixty-three".