646546434 has 8 divisors (see below), whose sum is σ = 1293092880. Its totient is φ = 215515476.

The previous prime is 646546403. The next prime is 646546441. The reversal of 646546434 is 434645646.

It is a sphenic number, since it is the product of 3 distinct primes.

646546434 is an admirable number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53878864 + ... + 53878875.

It is an arithmetic number, because the mean of its divisors is an integer number (161636610).

Almost surely, 2^646546434 is an apocalyptic number.

646546434 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

646546434 is a wasteful number, since it uses less digits than its factorization.

646546434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107757744.

The product of its digits is 829440, while the sum is 42.

The square root of 646546434 is about 25427.2773611333. The cubic root of 646546434 is about 864.7022192161.

The spelling of 646546434 in words is "six hundred forty-six million, five hundred forty-six thousand, four hundred thirty-four".