641080 has 64 divisors (see below), whose sum is σ = 1658880. Its totient is φ = 220800.

The previous prime is 641077. The next prime is 641083. The reversal of 641080 is 80146.

641080 = 93² + 94² + ... + 139².

It is an interprime number because it is at equal distance from previous prime (641077) and next prime (641083).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641083) 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, 13617 + ... + 13663.

It is an arithmetic number, because the mean of its divisors is an integer number (25920).

2⁶⁴¹⁰⁸⁰ 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 641080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (829440).

641080 is an abundant number, since it is smaller than the sum of its proper divisors (1017800).

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

641080 is a wasteful number, since it uses less digits than its factorization.

641080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100 (or 96 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 641080 is about 800.6747154744. The cubic root of 641080 is about 86.2258351403.

The spelling of 641080 in words is "six hundred forty-one thousand, eighty".