641892320 has 24 divisors (see below), whose sum is σ = 1516470984. Its totient is φ = 256756864.

The previous prime is 641892313. The next prime is 641892323. The reversal of 641892320 is 23298146.

641892320 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641892323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2005754 + ... + 2006073.

It is an arithmetic number, because the mean of its divisors is an integer number (63186291).

Almost surely, 2^641892320 is an apocalyptic number.

It is an amenable number.

641892320 is an abundant number, since it is smaller than the sum of its proper divisors (874578664).

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

641892320 is a wasteful number, since it uses less digits than its factorization.

641892320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4011842 (or 4011834 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 641892320 is about 25335.5939342262. The cubic root of 641892320 is about 862.6223902492.

The spelling of 641892320 in words is "six hundred forty-one million, eight hundred ninety-two thousand, three hundred twenty".