643241088 has 160 divisors (see below), whose sum is σ = 2187989760. Its totient is φ = 183762432.

The previous prime is 643241063. The next prime is 643241113. The reversal of 643241088 is 880142346.

643241088 is a `hidden beast` number, since 643 + 2 + 4 + 1 + 0 + 8 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (643241063) and next prime (643241113).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 68145 + ... + 77007.

It is an arithmetic number, because the mean of its divisors is an integer number (13674936).

Almost surely, 2^643241088 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 643241088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1093994880).

643241088 is an abundant number, since it is smaller than the sum of its proper divisors (1544748672).

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

643241088 is an equidigital number, since it uses as much as digits as its factorization.

643241088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8896 (or 8875 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 36.

The square root of 643241088 is about 25362.1980120020. The cubic root of 643241088 is about 863.2261589686.

The spelling of 643241088 in words is "six hundred forty-three million, two hundred forty-one thousand, eighty-eight".