63531642 has 16 divisors (see below), whose sum is σ = 128672640. Its totient is φ = 20908992.

The previous prime is 63531599. The next prime is 63531647. The reversal of 63531642 is 24613536.

It is not an unprimeable number, because it can be changed into a prime (63531647) 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, 66543 + ... + 67490.

It is an arithmetic number, because the mean of its divisors is an integer number (8042040).

Almost surely, 2^63531642 is an apocalyptic number.

63531642 is an abundant number, since it is smaller than the sum of its proper divisors (65140998).

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

63531642 is a wasteful number, since it uses less digits than its factorization.

63531642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134117.

The product of its digits is 12960, while the sum is 30.

The square root of 63531642 is about 7970.6738736446. The cubic root of 63531642 is about 399.0218642424.

The spelling of 63531642 in words is "sixty-three million, five hundred thirty-one thousand, six hundred forty-two".