63661242 has 32 divisors (see below), whose sum is σ = 130977792. Its totient is φ = 20616624.

The previous prime is 63661231. The next prime is 63661261. The reversal of 63661242 is 24216636.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58023 + ... + 59109.

It is an arithmetic number, because the mean of its divisors is an integer number (4093056).

Almost surely, 2^63661242 is an apocalyptic number.

63661242 is an abundant number, since it is smaller than the sum of its proper divisors (67316550).

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

63661242 is a wasteful number, since it uses less digits than its factorization.

63661242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1362.

The product of its digits is 10368, while the sum is 30.

The square root of 63661242 is about 7978.7995337645. The cubic root of 63661242 is about 399.2930052991.

Adding to 63661242 its reverse (24216636), we get a palindrome (87877878).

It can be divided in two parts, 63661 and 242, that added together give a triangular number (63903 = T₃₅₇).

The spelling of 63661242 in words is "sixty-three million, six hundred sixty-one thousand, two hundred forty-two".