63648742 has 16 divisors (see below), whose sum is σ = 97685712. Its totient is φ = 31093920.

The previous prime is 63648737. The next prime is 63648743. The reversal of 63648742 is 24784636.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 63648695 and 63648704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63648743) 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, 17493 + ... + 20815.

It is an arithmetic number, because the mean of its divisors is an integer number (6105357).

Almost surely, 2^63648742 is an apocalyptic number.

63648742 is a deficient number, since it is larger than the sum of its proper divisors (34036970).

63648742 is a wasteful number, since it uses less digits than its factorization.

63648742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3543.

The product of its digits is 193536, while the sum is 40.

The square root of 63648742 is about 7978.0161694496. The cubic root of 63648742 is about 399.2668696205.

The spelling of 63648742 in words is "sixty-three million, six hundred forty-eight thousand, seven hundred forty-two".