642062016 has 84 divisors (see below), whose sum is σ = 1848102984. Its totient is φ = 213120000.

The previous prime is 642062011. The next prime is 642062039. The reversal of 642062016 is 610260246.

It is a happy number.

642062016 is a `hidden beast` number, since 6 + 4 + 20 + 620 + 16 = 666.

It is not an unprimeable number, because it can be changed into a prime (642062011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 142356 + ... + 146796.

It is an arithmetic number, because the mean of its divisors is an integer number (22001226).

Almost surely, 2^642062016 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 642062016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (924051492).

642062016 is an abundant number, since it is smaller than the sum of its proper divisors (1206040968).

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

642062016 is a wasteful number, since it uses less digits than its factorization.

642062016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4710 (or 4697 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 642062016 is about 25338.9426772310. The cubic root of 642062016 is about 862.6984002314.

The spelling of 642062016 in words is "six hundred forty-two million, sixty-two thousand, sixteen".