1642060566 has 64 divisors (see below), whose sum is σ = 3887170560. Its totient is φ = 512023680.

The previous prime is 1642060543. The next prime is 1642060571. The reversal of 1642060566 is 6650602461.

It is a happy number.

1642060566 is a `hidden beast` number, since 1 + 6 + 42 + 0 + 605 + 6 + 6 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 1642060566.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 147951 + ... + 158661.

It is an arithmetic number, because the mean of its divisors is an integer number (60737040).

Almost surely, 2^1642060566 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1642060566, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1943585280).

1642060566 is an abundant number, since it is smaller than the sum of its proper divisors (2245109994).

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

1642060566 is a wasteful number, since it uses less digits than its factorization.

1642060566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10906 (or 10900 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The square root of 1642060566 is about 40522.3465016526. The cubic root of 1642060566 is about 1179.7673978946.

The spelling of 1642060566 in words is "one billion, six hundred forty-two million, sixty thousand, five hundred sixty-six".