63721612 has 6 divisors (see below), whose sum is σ = 111512828. Its totient is φ = 31860804.

The previous prime is 63721589. The next prime is 63721639. The reversal of 63721612 is 21612736.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7965198 + ... + 7965205.

Almost surely, 2^63721612 is an apocalyptic number.

It is an amenable number.

63721612 is a deficient number, since it is larger than the sum of its proper divisors (47791216).

63721612 is a wasteful number, since it uses less digits than its factorization.

63721612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15930407 (or 15930405 counting only the distinct ones).

The product of its digits is 3024, while the sum is 28.

The square root of 63721612 is about 7982.5817878679. The cubic root of 63721612 is about 399.4191820344.

The spelling of 63721612 in words is "sixty-three million, seven hundred twenty-one thousand, six hundred twelve".