63220361 has 4 divisors (see below), whose sum is σ = 64413252. Its totient is φ = 62027472.

The previous prime is 63220343. The next prime is 63220387. The reversal of 63220361 is 16302236.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 49970761 + 13249600 = 7069^2 + 3640^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63220361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63220301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 596366 + ... + 596471.

It is an arithmetic number, because the mean of its divisors is an integer number (16103313).

Almost surely, 2^63220361 is an apocalyptic number.

It is an amenable number.

63220361 is a deficient number, since it is larger than the sum of its proper divisors (1192891).

63220361 is a wasteful number, since it uses less digits than its factorization.

63220361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1192890.

The product of its (nonzero) digits is 1296, while the sum is 23.

The square root of 63220361 is about 7951.1232539812. The cubic root of 63220361 is about 398.3691116283.

Adding to 63220361 its reverse (16302236), we get a palindrome (79522597).

The spelling of 63220361 in words is "sixty-three million, two hundred twenty thousand, three hundred sixty-one".