63475220 has 12 divisors (see below), whose sum is σ = 133298004. Its totient is φ = 25390080.

The previous prime is 63475211. The next prime is 63475283. The reversal of 63475220 is 2257436.

It can be written as a sum of positive squares in 2 ways, for example, as 10214416 + 53260804 = 3196^2 + 7298^2 .

It is a congruent number.

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 in 3 ways as a sum of consecutive naturals, for example, 1586861 + ... + 1586900.

It is an arithmetic number, because the mean of its divisors is an integer number (11108167).

Almost surely, 2^63475220 is an apocalyptic number.

It is an amenable number.

63475220 is an abundant number, since it is smaller than the sum of its proper divisors (69822784).

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

63475220 is a wasteful number, since it uses less digits than its factorization.

63475220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3173770 (or 3173768 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 29.

The square root of 63475220 is about 7967.1337380516. The cubic root of 63475220 is about 398.9037064293.

The spelling of 63475220 in words is "sixty-three million, four hundred seventy-five thousand, two hundred twenty".