643250160 has 480 divisors, whose sum is σ = 2664829440. Its totient is φ = 141087744.

The previous prime is 643250129. The next prime is 643250171. The reversal of 643250160 is 61052346.

643250160 is a `hidden beast` number, since 643 + 2 + 5 + 0 + 16 + 0 = 666.

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 pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 3946239 + ... + 3946401.

It is an arithmetic number, because the mean of its divisors is an integer number (5551728).

Almost surely, 2^643250160 is an apocalyptic number.

643250160 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 643250160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1332414720).

643250160 is an abundant number, since it is smaller than the sum of its proper divisors (2021579280).

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

643250160 is a wasteful number, since it uses less digits than its factorization.

643250160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227 (or 209 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 643250160 is about 25362.3768602235. The cubic root of 643250160 is about 863.2302171416.

The spelling of 643250160 in words is "six hundred forty-three million, two hundred fifty thousand, one hundred sixty".