63001220 has 24 divisors (see below), whose sum is σ = 132456408. Its totient is φ = 25171200.

The previous prime is 63001219. The next prime is 63001241. The reversal of 63001220 is 2210036.

It can be written as a sum of positive squares in 4 ways, for example, as 7409284 + 55591936 = 2722^2 + 7456^2 .

It is a junction number, because it is equal to n+sod(n) for n = 63001195 and 63001204.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26480 + ... + 28760.

It is an arithmetic number, because the mean of its divisors is an integer number (5519017).

Almost surely, 2^63001220 is an apocalyptic number.

It is an amenable number.

63001220 is an abundant number, since it is smaller than the sum of its proper divisors (69455188).

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

63001220 is a wasteful number, since it uses less digits than its factorization.

63001220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3671 (or 3669 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 63001220 is about 7937.3307855979. The cubic root of 63001220 is about 397.9082892650.

Adding to 63001220 its reverse (2210036), we get a palindrome (65211256).

The spelling of 63001220 in words is "sixty-three million, one thousand, two hundred twenty".