641384352 has 192 divisors, whose sum is σ = 2153813760. Its totient is φ = 181896192.

The previous prime is 641384333. The next prime is 641384411. The reversal of 641384352 is 253483146.

641384352 is a `hidden beast` number, since 641 + 3 + 8 + 4 + 3 + 5 + 2 = 666.

It is a super-2 number, since 2×641384352² = 822747773980919808, which contains 22 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1045998 + ... + 1046610.

It is an arithmetic number, because the mean of its divisors is an integer number (11217780).

Almost surely, 2^641384352 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 641384352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1076906880).

641384352 is an abundant number, since it is smaller than the sum of its proper divisors (1512429408).

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

641384352 is a wasteful number, since it uses less digits than its factorization.

641384352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 812 (or 798 counting only the distinct ones).

The product of its digits is 69120, while the sum is 36.

The square root of 641384352 is about 25325.5671604803. The cubic root of 641384352 is about 862.3947818717.

The spelling of 641384352 in words is "six hundred forty-one million, three hundred eighty-four thousand, three hundred fifty-two".