641708486 has 8 divisors (see below), whose sum is σ = 1019184120. Its totient is φ = 301980448.

The previous prime is 641708477. The next prime is 641708497. The reversal of 641708486 is 684807146.

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 (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9436856 + ... + 9436923.

It is an arithmetic number, because the mean of its divisors is an integer number (127398015).

Almost surely, 2^641708486 is an apocalyptic number.

641708486 is a deficient number, since it is larger than the sum of its proper divisors (377475634).

641708486 is a wasteful number, since it uses less digits than its factorization.

641708486 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18873798.

The product of its (nonzero) digits is 258048, while the sum is 44.

The square root of 641708486 is about 25331.9656955397. The cubic root of 641708486 is about 862.5400324764.

The spelling of 641708486 in words is "six hundred forty-one million, seven hundred eight thousand, four hundred eighty-six".