641245352 has 64 divisors (see below), whose sum is σ = 1333463040. Its totient is φ = 286675200.

The previous prime is 641245331. The next prime is 641245387. The reversal of 641245352 is 253542146.

It is a super-2 number, since 2×641245352² = 822391202923207808, which contains 22 as substring.

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 15 ways as a sum of consecutive naturals, for example, 2022698 + ... + 2023014.

It is an arithmetic number, because the mean of its divisors is an integer number (20835360).

Almost surely, 2^641245352 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 641245352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (666731520).

641245352 is an abundant number, since it is smaller than the sum of its proper divisors (692217688).

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

641245352 is a wasteful number, since it uses less digits than its factorization.

641245352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 642 (or 638 counting only the distinct ones).

The product of its digits is 28800, while the sum is 32.

The square root of 641245352 is about 25322.8227494488. The cubic root of 641245352 is about 862.3324783378.

Adding to 641245352 its reverse (253542146), we get a palindrome (894787498).

The spelling of 641245352 in words is "six hundred forty-one million, two hundred forty-five thousand, three hundred fifty-two".