641340380 has 24 divisors (see below), whose sum is σ = 1375472448. Its totient is φ = 251077568.

The previous prime is 641340367. The next prime is 641340433. The reversal of 641340380 is 83043146.

641340380 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×641340380² = 822634966037088800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 340199 + ... + 342078.

It is an arithmetic number, because the mean of its divisors is an integer number (57311352).

Almost surely, 2^641340380 is an apocalyptic number.

It is an amenable number.

641340380 is an abundant number, since it is smaller than the sum of its proper divisors (734132068).

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

641340380 is a wasteful number, since it uses less digits than its factorization.

641340380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 682333 (or 682331 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 641340380 is about 25324.6990110445. The cubic root of 641340380 is about 862.3750734136.

The spelling of 641340380 in words is "six hundred forty-one million, three hundred forty thousand, three hundred eighty".