643046486 has 8 divisors (see below), whose sum is σ = 970958064. Its totient is φ = 319393800.

The previous prime is 643046447. The next prime is 643046513. The reversal of 643046486 is 684640346.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1064345 + ... + 1064948.

It is an arithmetic number, because the mean of its divisors is an integer number (121369758).

Almost surely, 2^643046486 is an apocalyptic number.

643046486 is a deficient number, since it is larger than the sum of its proper divisors (327911578).

643046486 is a wasteful number, since it uses less digits than its factorization.

643046486 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2129446.

The product of its (nonzero) digits is 331776, while the sum is 41.

The square root of 643046486 is about 25358.3612640880. The cubic root of 643046486 is about 863.1390985680.

The spelling of 643046486 in words is "six hundred forty-three million, forty-six thousand, four hundred eighty-six".