641001610 has 16 divisors (see below), whose sum is σ = 1175573736. Its totient is φ = 251562688.

The previous prime is 641001607. The next prime is 641001617. The reversal of 641001610 is 16100146.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 426876921 + 214124689 = 20661^2 + 14633^2 .

It is not an unprimeable number, because it can be changed into a prime (641001617) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 604189 + ... + 605248.

Almost surely, 2^641001610 is an apocalyptic number.

641001610 is a deficient number, since it is larger than the sum of its proper divisors (534572126).

641001610 is a wasteful number, since it uses less digits than its factorization.

641001610 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1209497.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 641001610 is about 25318.0095979127. The cubic root of 641001610 is about 862.2232048857.

Adding to 641001610 its reverse (16100146), we get a palindrome (657101756).

The spelling of 641001610 in words is "six hundred forty-one million, one thousand, six hundred ten".