63542564 has 6 divisors (see below), whose sum is σ = 111199494. Its totient is φ = 31771280.

The previous prime is 63542561. The next prime is 63542569. The reversal of 63542564 is 46524536.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 39942400 + 23600164 = 6320^2 + 4858^2 .

It is not an unprimeable number, because it can be changed into a prime (63542561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7942817 + ... + 7942824.

It is an arithmetic number, because the mean of its divisors is an integer number (18533249).

Almost surely, 2^63542564 is an apocalyptic number.

It is an amenable number.

63542564 is a deficient number, since it is larger than the sum of its proper divisors (47656930).

63542564 is a wasteful number, since it uses less digits than its factorization.

63542564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15885645 (or 15885643 counting only the distinct ones).

The product of its digits is 86400, while the sum is 35.

The square root of 63542564 is about 7971.3589807510. The cubic root of 63542564 is about 399.0447287917.

The spelling of 63542564 in words is "sixty-three million, five hundred forty-two thousand, five hundred sixty-four".