63641109 has 32 divisors (see below), whose sum is σ = 103587840. Its totient is φ = 33969600.

The previous prime is 63641107. The next prime is 63641113. The reversal of 63641109 is 90114636.

63641109 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 63641109 - 2¹ = 63641107 is a prime.

It is a super-3 number, since 3×63641109³ (a number of 24 digits) contains 333 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63641107) 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 31 ways as a sum of consecutive naturals, for example, 17194 + ... + 20564.

It is an arithmetic number, because the mean of its divisors is an integer number (3237120).

Almost surely, 2^63641109 is an apocalyptic number.

It is an amenable number.

63641109 is a deficient number, since it is larger than the sum of its proper divisors (39946731).

63641109 is a wasteful number, since it uses less digits than its factorization.

63641109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3441.

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 63641109 is about 7977.5377780365. The cubic root of 63641109 is about 399.2509084470.

The spelling of 63641109 in words is "sixty-three million, six hundred forty-one thousand, one hundred nine".