63561534 has 16 divisors (see below), whose sum is σ = 127346688. Its totient is φ = 21149912.

The previous prime is 63561527. The next prime is 63561539. The reversal of 63561534 is 43516536.

It is a junction number, because it is equal to n+sod(n) for n = 63561495 and 63561504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63561539) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5502 + ... + 12545.

It is an arithmetic number, because the mean of its divisors is an integer number (7959168).

Almost surely, 2^63561534 is an apocalyptic number.

63561534 is an abundant number, since it is smaller than the sum of its proper divisors (63785154).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

63561534 is a wasteful number, since it uses less digits than its factorization.

63561534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18639.

The product of its digits is 32400, while the sum is 33.

The square root of 63561534 is about 7972.5487768969. The cubic root of 63561534 is about 399.0844351180.

The spelling of 63561534 in words is "sixty-three million, five hundred sixty-one thousand, five hundred thirty-four".