641003760 has 160 divisors (see below), whose sum is σ = 2324256000. Its totient is φ = 161927424.

The previous prime is 641003749. The next prime is 641003801. The reversal of 641003760 is 67300146.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 33231 + ... + 48849.

It is an arithmetic number, because the mean of its divisors is an integer number (14526600).

Almost surely, 2^641003760 is an apocalyptic number.

641003760 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 641003760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1162128000).

641003760 is an abundant number, since it is smaller than the sum of its proper divisors (1683252240).

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

641003760 is a wasteful number, since it uses less digits than its factorization.

641003760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15660 (or 15648 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 641003760 is about 25318.0520577710. The cubic root of 641003760 is about 862.2241688863.

The spelling of 641003760 in words is "six hundred forty-one million, three thousand, seven hundred sixty".