63540189 has 24 divisors (see below), whose sum is σ = 95691960. Its totient is φ = 40578048.

The previous prime is 63540181. The next prime is 63540209. The reversal of 63540189 is 98104536.

63540189 is a `hidden beast` number, since 635 + 4 + 0 + 18 + 9 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 12131289 + 51408900 = 3483^2 + 7170^2 .

It is not a de Polignac number, because 63540189 - 2³ = 63540181 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63540181) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 34869 + ... + 36645.

It is an arithmetic number, because the mean of its divisors is an integer number (3987165).

Almost surely, 2^63540189 is an apocalyptic number.

It is an amenable number.

63540189 is a deficient number, since it is larger than the sum of its proper divisors (32151771).

63540189 is a wasteful number, since it uses less digits than its factorization.

63540189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1949 (or 1946 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 63540189 is about 7971.2100085244. The cubic root of 63540189 is about 399.0397570952.

The spelling of 63540189 in words is "sixty-three million, five hundred forty thousand, one hundred eighty-nine".