63475221 has 8 divisors (see below), whose sum is σ = 85077504. Its totient is φ = 42094880.

The previous prime is 63475211. The next prime is 63475283. The reversal of 63475221 is 12257436.

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 63475221 - 2⁵ = 63475189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63475201) 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, 54816 + ... + 55961.

It is an arithmetic number, because the mean of its divisors is an integer number (10634688).

Almost surely, 2^63475221 is an apocalyptic number.

It is an amenable number.

63475221 is a deficient number, since it is larger than the sum of its proper divisors (21602283).

63475221 is a wasteful number, since it uses less digits than its factorization.

63475221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110971.

The product of its digits is 10080, while the sum is 30.

The square root of 63475221 is about 7967.1338008094. The cubic root of 63475221 is about 398.9037085241.

It can be divided in two parts, 634 and 75221, that added together give a triangular number (75855 = T₃₈₉).

The spelling of 63475221 in words is "sixty-three million, four hundred seventy-five thousand, two hundred twenty-one".