642460563 has 12 divisors (see below), whose sum is σ = 953080128. Its totient is φ = 416730960.

The previous prime is 642460477. The next prime is 642460589. The reversal of 642460563 is 365064246.

642460563 is a `hidden beast` number, since 6 + 42 + 4 + 605 + 6 + 3 = 666.

642460563 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 642460563 - 2⁹ = 642460051 is a prime.

It is not an unprimeable number, because it can be changed into a prime (642460163) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 964323 + ... + 964988.

It is an arithmetic number, because the mean of its divisors is an integer number (79423344).

Almost surely, 2^642460563 is an apocalyptic number.

642460563 is a deficient number, since it is larger than the sum of its proper divisors (310619565).

642460563 is a wasteful number, since it uses less digits than its factorization.

642460563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1929354 (or 1929351 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 36.

The square root of 642460563 is about 25346.8057750873. The cubic root of 642460563 is about 862.8768641670.

The spelling of 642460563 in words is "six hundred forty-two million, four hundred sixty thousand, five hundred sixty-three".