642946483 has 4 divisors (see below), whose sum is σ = 643340880. Its totient is φ = 642552088.

The previous prime is 642946459. The next prime is 642946487. The reversal of 642946483 is 384649246.

642946483 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-642946483 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (642946487) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 194743 + ... + 198016.

It is an arithmetic number, because the mean of its divisors is an integer number (160835220).

Almost surely, 2^642946483 is an apocalyptic number.

642946483 is a deficient number, since it is larger than the sum of its proper divisors (394397).

642946483 is a wasteful number, since it uses less digits than its factorization.

642946483 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 394396.

The product of its digits is 995328, while the sum is 46.

The square root of 642946483 is about 25356.3893920250. The cubic root of 642946483 is about 863.0943527236.

The spelling of 642946483 in words is "six hundred forty-two million, nine hundred forty-six thousand, four hundred eighty-three".