642666062 has 48 divisors (see below), whose sum is σ = 1073193408. Its totient is φ = 288276480.

The previous prime is 642666047. The next prime is 642666067. The reversal of 642666062 is 260666246.

642666062 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 not an unprimeable number, because it can be changed into a prime (642666067) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1113518 + ... + 1114094.

It is an arithmetic number, because the mean of its divisors is an integer number (22358196).

Almost surely, 2^642666062 is an apocalyptic number.

642666062 is a deficient number, since it is larger than the sum of its proper divisors (430527346).

642666062 is a wasteful number, since it uses less digits than its factorization.

642666062 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 701 (or 684 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 38.

The square root of 642666062 is about 25350.8591964848. The cubic root of 642666062 is about 862.9688549911.

The spelling of 642666062 in words is "six hundred forty-two million, six hundred sixty-six thousand, sixty-two".