63541645 has 4 divisors (see below), whose sum is σ = 76249980. Its totient is φ = 50833312.

The previous prime is 63541637. The next prime is 63541649. The reversal of 63541645 is 54614536.

63541645 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 39980329 + 23561316 = 6323^2 + 4854^2 .

It is a cyclic number.

It is not a de Polignac number, because 63541645 - 2³ = 63541637 is a prime.

It is a super-3 number, since 3×63541645³ (a number of 24 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 63541645.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63541649) 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 3 ways as a sum of consecutive naturals, for example, 6354160 + ... + 6354169.

It is an arithmetic number, because the mean of its divisors is an integer number (19062495).

Almost surely, 2^63541645 is an apocalyptic number.

It is an amenable number.

63541645 is a deficient number, since it is larger than the sum of its proper divisors (12708335).

63541645 is a wasteful number, since it uses less digits than its factorization.

63541645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12708334.

The product of its digits is 43200, while the sum is 34.

The square root of 63541645 is about 7971.3013366702. The cubic root of 63541645 is about 399.0428050215.

The spelling of 63541645 in words is "sixty-three million, five hundred forty-one thousand, six hundred forty-five".