63218620 has 12 divisors (see below), whose sum is σ = 132759144. Its totient is φ = 25287440.

The previous prime is 63218599. The next prime is 63218621. The reversal of 63218620 is 2681236.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63218621) 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, 1580446 + ... + 1580485.

It is an arithmetic number, because the mean of its divisors is an integer number (11063262).

Almost surely, 2^63218620 is an apocalyptic number.

It is an amenable number.

63218620 is an abundant number, since it is smaller than the sum of its proper divisors (69540524).

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

63218620 is a wasteful number, since it uses less digits than its factorization.

63218620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3160940 (or 3160938 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 63218620 is about 7951.0137718407. The cubic root of 63218620 is about 398.3654547527.

Adding to 63218620 its reverse (2681236), we get a palindrome (65899856).

It can be divided in two parts, 6321 and 8620, that added together give a palindrome (14941).

The spelling of 63218620 in words is "sixty-three million, two hundred eighteen thousand, six hundred twenty".