63065921 has 8 divisors (see below), whose sum is σ = 66580320. Its totient is φ = 59571072.

The previous prime is 63065917. The next prime is 63065953. The reversal of 63065921 is 12956036.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 63065921 - 2² = 63065917 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63065021) 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, 2006 + ... + 11408.

It is an arithmetic number, because the mean of its divisors is an integer number (8322540).

Almost surely, 2^63065921 is an apocalyptic number.

It is an amenable number.

63065921 is a deficient number, since it is larger than the sum of its proper divisors (3514399).

63065921 is a wasteful number, since it uses less digits than its factorization.

63065921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9775.

The product of its (nonzero) digits is 9720, while the sum is 32.

The square root of 63065921 is about 7941.4054801401. The cubic root of 63065921 is about 398.0444572949.

The spelling of 63065921 in words is "sixty-three million, sixty-five thousand, nine hundred twenty-one".