63727645 has 32 divisors (see below), whose sum is σ = 84913920. Its totient is φ = 45696000.

The previous prime is 63727627. The next prime is 63727669. The reversal of 63727645 is 54672736.

63727645 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 63727645 - 2¹⁵ = 63694877 is a prime.

It is a super-2 number, since 2×63727645² = 8122425474492050, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 63727598 and 63727607.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 253770 + ... + 254020.

It is an arithmetic number, because the mean of its divisors is an integer number (2653560).

Almost surely, 2^63727645 is an apocalyptic number.

It is an amenable number.

63727645 is a deficient number, since it is larger than the sum of its proper divisors (21186275).

63727645 is a wasteful number, since it uses less digits than its factorization.

63727645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 405.

The product of its digits is 211680, while the sum is 40.

The square root of 63727645 is about 7982.9596641847. The cubic root of 63727645 is about 399.4317869671.

It can be divided in two parts, 637 and 27645, that added together give a palindrome (28282).

The spelling of 63727645 in words is "sixty-three million, seven hundred twenty-seven thousand, six hundred forty-five".