641152 has 16 divisors (see below), whose sum is σ = 1277550. Its totient is φ = 320512.

The previous prime is 641143. The next prime is 641167. The reversal of 641152 is 251146.

It can be written as a sum of positive squares in only one way, i.e., 553536 + 87616 = 744^2 + 296^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is a super-2 number, since 2×641152² = 822151774208, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2377 + ... + 2632.

2⁶⁴¹¹⁵² is an apocalyptic number.

It is an amenable number.

641152 is a deficient number, since it is larger than the sum of its proper divisors (636398).

641152 is an equidigital number, since it uses as much as digits as its factorization.

641152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5023 (or 5011 counting only the distinct ones).

The product of its digits is 240, while the sum is 19.

The square root of 641152 is about 800.7196762913. The cubic root of 641152 is about 86.2290630410.

Adding to 641152 its reverse (251146), we get a palindrome (892298).

The spelling of 641152 in words is "six hundred forty-one thousand, one hundred fifty-two".