63222640 has 160 divisors (see below), whose sum is σ = 170989056. Its totient is φ = 21565440.

The previous prime is 63222629. The next prime is 63222641. The reversal of 63222640 is 4622236.

It is a happy number.

63222640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63222641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1192854 + ... + 1192906.

Almost surely, 2^63222640 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 63222640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85494528).

63222640 is an abundant number, since it is smaller than the sum of its proper divisors (107766416).

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

63222640 is a wasteful number, since it uses less digits than its factorization.

63222640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147 (or 141 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 63222640 is about 7951.2665657743. The cubic root of 63222640 is about 398.3738984421.

Adding to 63222640 its reverse (4622236), we get a palindrome (67844876).

The spelling of 63222640 in words is "sixty-three million, two hundred twenty-two thousand, six hundred forty".