641352936 has 64 divisors (see below), whose sum is σ = 1839329280. Its totient is φ = 182554560.

The previous prime is 641352919. The next prime is 641352949. The reversal of 641352936 is 639253146.

It is a super-2 number, since 2×641352936² = 822667177031640192, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 641352894 and 641352903.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38485 + ... + 52571.

It is an arithmetic number, because the mean of its divisors is an integer number (28739520).

Almost surely, 2^641352936 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 641352936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (919664640).

641352936 is an abundant number, since it is smaller than the sum of its proper divisors (1197976344).

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

641352936 is a wasteful number, since it uses less digits than its factorization.

641352936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14374 (or 14370 counting only the distinct ones).

The product of its digits is 116640, while the sum is 39.

The square root of 641352936 is about 25324.9469101122. The cubic root of 641352936 is about 862.3807011640.

The spelling of 641352936 in words is "six hundred forty-one million, three hundred fifty-two thousand, nine hundred thirty-six".