641676308 has 48 divisors (see below), whose sum is σ = 1386438144. Its totient is φ = 253048320.

The previous prime is 641676307. The next prime is 641676319. The reversal of 641676308 is 803676146.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641676307) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 120053 + ... + 125283.

It is an arithmetic number, because the mean of its divisors is an integer number (28884128).

Almost surely, 2^641676308 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 641676308, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (693219072).

641676308 is an abundant number, since it is smaller than the sum of its proper divisors (744761836).

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

641676308 is a wasteful number, since it uses less digits than its factorization.

641676308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5592 (or 5590 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 41.

The square root of 641676308 is about 25331.3305611845. The cubic root of 641676308 is about 862.5256150903.

The spelling of 641676308 in words is "six hundred forty-one million, six hundred seventy-six thousand, three hundred eight".