203641064 has 48 divisors (see below), whose sum is σ = 425748960. Its totient is φ = 91229600.

The previous prime is 203641043. The next prime is 203641091. The reversal of 203641064 is 460146302.

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 11 ways as a sum of consecutive naturals, for example, 67247 + ... + 70209.

It is an arithmetic number, because the mean of its divisors is an integer number (8869770).

Almost surely, 2^203641064 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 203641064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (212874480).

203641064 is an abundant number, since it is smaller than the sum of its proper divisors (222107896).

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

203641064 is a wasteful number, since it uses less digits than its factorization.

203641064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3062 (or 3047 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 203641064 is about 14270.2860517931. The cubic root of 203641064 is about 588.3310721361.

Adding to 203641064 its reverse (460146302), we get a palindrome (663787366).

The spelling of 203641064 in words is "two hundred three million, six hundred forty-one thousand, sixty-four".