641463508 has 96 divisors (see below), whose sum is σ = 1366041600. Its totient is φ = 263259360.

The previous prime is 641463467. The next prime is 641463509. The reversal of 641463508 is 805364146.

It is a happy number.

It is a super-2 number, since 2×641463508² = 822950864191332128, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641463509) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 4896603 + ... + 4896733.

It is an arithmetic number, because the mean of its divisors is an integer number (14229600).

Almost surely, 2^641463508 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 641463508, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (683020800).

641463508 is an abundant number, since it is smaller than the sum of its proper divisors (724578092).

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

641463508 is a wasteful number, since it uses less digits than its factorization.

641463508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282 (or 266 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 37.

The square root of 641463508 is about 25327.1298808215. The cubic root of 641463508 is about 862.4302576948.

The spelling of 641463508 in words is "six hundred forty-one million, four hundred sixty-three thousand, five hundred eight".